# Document history for Amazon OpenSearch Service Document historySupport for OpenSearch 3.5 Amazon OpenSearch Service supports OpenSearch version 3.4 and 3.5. For more information, see [OpenSearch 3.4 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.4.0.md) and [OpenSearch 3.5 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.5.0.md). For information about OpenSearch 3.4 and 3.5 operations, see the [OpenSearch REST API reference](https://docs.opensearch.org/latest/api-reference/), or the API reference for the specific plugin. For a complete list of breaking changes, refer to the OpenSearch documentation [here](https://docs.opensearch.org/latest/breaking-changes/).New features: GPU acceleration for vector indexes, auto-optimize, and vector ingestion Amazon OpenSearch Service now supports GPU acceleration for vector indexes, enabling faster vector search operations. Amazon OpenSearch Service also introduces auto-optimize to automatically tune collection performance and vector ingestion for simplified data loading. For more information, see [GPU acceleration for vector indexes](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/gpu-acceleration-vector-index.html), [Auto-optimize](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-auto-optimize.html), and [Vector ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-vector-ingestion.html).Support for OpenSearch 3.3 Amazon OpenSearch Service supports OpenSearch version 3.2 and 3.3. For more information, see [OpenSearch 3.2 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.2.0.md) and [OpenSearch 3.3 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.3.0.md). For information about OpenSearch 3.2 and 3.3 operations, see the [OpenSearch REST API reference](https://docs.opensearch.org/latest/api-reference/), or the API reference for the specific plugin. Support for Graviton4-based instance families (c8g,m8g,r8g r8gd) Amazon OpenSearch Service now supports Graviton4-based instance families (c8g, m8g, r8g, r8gd). For more information, see [Supported instance types in Amazon OpenSearch Service](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html.html). New feature: OpenSearch Ingestion machine learning offline batch inference Amazon OpenSearch Ingestion (OSI) pipelines support machine learning (ML) offline batch inference processing to efficiently enrich large volumes of data at low cost. Use offline batch inference whenever you have large datasets that can be processed asynchronously. Offline batch inference works with Amazon Bedrock and SageMaker models. This feature is available in all AWS Regions that support OpenSearch Ingestion with OpenSearch Service 2.17\$1 domains. For more information, see [Using an OpenSearch Ingestion pipeline with machine learning offline batch inference](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-clients-ml-commons-batch.html). New feature: CloudFormation templates to configure remote inference for semantic highlighting Semantic highlighting is an advanced search feature that enhances result relevance by analyzing the meaning and context of queries rather than relying solely on exact keyword matches. This capability uses machine learning models to evaluate semantic similarity between search queries and document content, identifying and highlighting the most contextually relevant sentences or passages within documents. Amazon OpenSearch Service now includes a CloudFormation templates that automatically configures Amazon SageMaker models for semantic highlighting. For more information, see [Remote inference for semantic highlighting templates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ml.html#cfn-template-semantic-highlighting).New feature: Configure OpenSearch Ingestion pipelines for cross-account ingestion For push-based sources such as HTTP and OTel, Amazon OpenSearch Ingestion enables you to share pipelines across AWS accounts from a virtual private cloud (VPC) to a pipeline endpoint in a separate VPC. For more information, see [Configuring OpenSearch Ingestion pipelines for cross-account ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cross-account-pipelines.html)The AmazonOpenSearchIngestionServiceRolePolicy managed policy was updated[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html#ac-managed-updates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html#ac-managed-updates) The update gives OpenSearch Ingestion permission to modify VPC endpoints created by OpenSearch in order to share pipelines across VPCs.Amazon OpenSearch Serverless supports disk-based vector search Disk-based vector search significantly reduces the operational costs for vector workloads in low-memory environments. For more information, see [Disk-based vector search](https://docs.opensearch.org/2.19/vector-search/optimizing-storage/disk-based-vector-search/).Support for OpenSearch 3.1 Amazon OpenSearch Service supports OpenSearch version 3.1. For information about upgrade compatability, see [Supported upgrade paths](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html#supported-upgrade-paths). For more information about changes in the new versions, see the OpenSearch [3.0](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.0.0.md) and [3.1](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.1.0.md) documentation. For information about OpenSearch 3.1 operations, see the [OpenSearch REST API reference](https://opensearch.org/docs/latest/opensearch/rest-api/index/), or the API reference for the specific plugin. Amazon OpenSearch Serverless supports Federal Information Processing Standards (FIPS) 140-2[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/fips-compliance-opensearch-serverless.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/fips-compliance-opensearch-serverless.html) FIPS 140-2, is a U.S. and Canadian government standard that specifies security requirements for cryptographic modules that protect sensitive information. Amazon OpenSearch Serverless FIPS endpoints are available in AWS Regions where FIPS is supported. These endpoints use TLS 1.2 or later and FIPS-validated cryptographic algorithms for all communications.New feature: SAML attribute-based fine-grained access control Amazon OpenSearch Service supports fine-grained access control with SAML to dynamically map users and groups from your identity provider to OpenSearch fine-grained access control users and roles. You can scope these roles to specific OpenSearch domains and serverless collections, and define index-level permissions and document-level security. For more information, see [Configure SAML attribute-based fine-grained access control](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application-enable-SAML-identity-federation.html#SAML-identity-federation-step-5).New topic: OpenSearch UI endpoints and quotas[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/opensearch-ui-endpoints-quotas.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/opensearch-ui-endpoints-quotas.html) Amazon OpenSearch UI expands its modernized operational analytics experience to new AWS Regions, including Asia Pacific (Hyderabad), Asia Pacific (Osaka), Asia Pacific (Seoul), Europe (Milan), Europe (Zurich), Europe (Spain), and US-West (N. California) enabling you to gain insights across data spanning managed domains and serverless collections from a single endpoint. OpenSearch UI can connect to OpenSearch domains above version 1.3 and OpenSearch serverless collections. It is now available in 22 AWS Regions.New feature: Machine Learning on Amazon OpenSearch Serverless OpenSearch Serverless now supports Machine Learning capabilities for AI workflows such as RAG (Retrieval-Augmented Generation) and semantic search. Use connectors to access ML algorithms and remote models hosted on third-party platforms or AWS services. For more information, see [Configure Machine Learning on Amazon OpenSearch Serverless](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-configure-machine-learning.html). Machine Learning on OpenSearch Serverless includes the following capabilities: **Neural Search and Hybrid Search** Perform semantic search operations that understand query context and meaning for more relevant results. Combine keyword and semantic search with hybrid search to improve relevance. For more information, see [Configure Neural Search and Hybrid Search on OpenSearch Serverless](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-configure-neural-search.html). **Connectors and Models** Connect to models hosted on third-party ML platforms and AWS services. Configure connectors with models and deploy them to run predictions and AI workflows. **Workflows** Automate complex ML setup and pre-processing tasks by chaining multiple API calls. Workflows simplify building AI applications on OpenSearch. For more information, see [Configure Workflows on OpenSearch Serverless](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-configure-workflows.html).New features: Automatic semantic enrichment Automatic semantic enrichment simplifies semantic search implementation and capabilities in Amazon OpenSearch Service. Semantic search returns query results that incorporate not just keyword matching, but the intent and contextual meaning of the user's search. For more information, see [About automatic semantic enrichment](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-semantic-enrichment.html). Automatic semantic enrichment offers the following benefits: **Simplified implementation** You don't need machine learning (ML) expertise or complex integrations. **Automated process** Semantic enrichment happens automatically during data ingestion. **Improved search relevance** Semantic enrichment enhances the quality and contextual accuracy of search results. **Scalability** Semantic enrichment applies semantic search to large datasets without manual intervention.New features: OpenSearch Serverless snapshots Snapshots are point-in-time backups of your Amazon OpenSearch Serverless collections that provide disaster recovery capabilities. OpenSearch Serverless automatically creates and manages snapshots of your collections, ensuring business continuity and data protection. **Key benefits** + Automatic hourly backups with no manual configuration required + Zero maintenance overhead + No additional storage costs + Quick recovery from accidental data loss + Ability to restore specific indices from a snapshot For more information, see [Backing up collections using snapshots](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-snapshots.html).OpenSearch Ingestion supports two new sources[Integrating OpenSearch Ingestion pipelines with other services and applications](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client.html) OpenSearch Ingestion now supports the following sources: + [Amazon Aurora](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client-aurora.html) + [Amazon RDS](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client-rds.html)New features: OpenSearch Service integration with Amazon S3 Vectors This integration offers the following features to greatly enhance vector search in OpenSearch Service. + Amazon S3 Vectors delivers the first cloud object store with native support to store and query vectors. S3 Vectors provides cost-effective, elastic, and durable vector storage that can be queried based on semantic meaning and similarity. It delivers sub-second query response times and up to 90% lower costs for uploading, storing, and querying vectors. + Amazon OpenSearch Service offers the ability to use Amazon S3 as a vector engine for vector indexes. This feature allows you to offload vector data to Amazon S3 while maintaining sub-second vector search capabilities at low cost. For more information, see [(Preview) OpenSearch Service integration with Amazon S3 Vectors](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/s3-vector-opensearch-integration.html).New topic: Atlassian integration with OpenSearch Ingestion You can now use Amazon OpenSearch Ingestion pipelines to process data from Atlassian Jira and Confluence services. This integration enables you to create a unified searchable knowledge base by synchronizing complete Jira projects and Confluence spaces into OpenSearch. The integration maintains real-time relevance through continuous monitoring and automatic synchronization of updates, while offering flexible filtering options for specific projects, issue types, and content. For more information, see [Using an OpenSearch Ingestion pipeline with Atlassian Services](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client-atlassian.html).Custom plugin management with the AWS CLI You can now manage custom plugins for Amazon OpenSearch Service using the AWS CLI. This feature allows you to install, update, secure, and uninstall custom plugins through a streamlined command-line workflow. You can also secure your plugins with AWS KMS keys and manage plugin upgrades when updating to newer versions of OpenSearch. For more information, see [Managing custom plugins using the AWS CLI](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-plugins.html#managing-custom-plugins-cli) and [Amazon OpenSearch Service custom package AWS KMS integration](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-package-kms-integration.html) Support for OpenSearch 2.19[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-operations.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-operations.html) Amazon OpenSearch Service supports OpenSearch version 2.19. For more information, see the OpenSearch [2.19](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.19.0.md) release notes. For information about OpenSearch 2.19 operations, see the [OpenSearch REST API reference](https://opensearch.org/docs/latest/opensearch/rest-api/index/), or the API reference for the specific plugin. New support for specifying pipeline roles in OpenSearch Ingestion When you create or update pipeline in Amazon OpenSearch Ingestion, you no longer a specify pipeline role in a YAML format pipeline configuration. Instead, in the console, you specify the role in a new **Pipeline role** field. If you are using the AWS CLI, you use a new `--pipeline-role-arn` parameter. For more information, see the following topics: + [Setting up roles and users in Amazon OpenSearch Ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/pipeline-security-overview.html) + [Creating Amazon OpenSearch Ingestion pipelines](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/creating-pipeline.html) + [Tutorial: Ingesting data into a domain using Amazon OpenSearch Ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/osis-get-started.html) + [Tutorial: Ingesting data into a collection using Amazon OpenSearch Ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/osis-serverless-get-started.html) + [CreatePipeline](https://docs.aws.amazon.com/opensearch-service/latest/APIReference/API_osis_CreatePipeline.html) + [UpdatePipeline](https://docs.aws.amazon.com/opensearch-service/latest/APIReference/API_osis_UpdatePipeline.html)New topic The troubleshooting topic [Custom plugin installation fails due to version compatibility](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/handling-errors.html#troubleshooting-custom-plugins) address the steps to take when you encounter the error `PluginValidationFailureReason : The provided plugin could not be loaded`. This error is typically the result of a version mismatch between the plugin and the running OpenSearch instance.New feature: OpenSearch UI compatibility with cross-cluster search OpenSearch UI is now compatible with cross-cluster search. This makes it possible for you to use OpenSearch UI in one AWS Region to access clusters in a different Region. This is done by configuring it as a remote cluster connected with a cluster in the same Region. For more information, see [Cross-Region and cross-account data access with cross-cluster search](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application-cross-cluster-search.html).Revised content: "Using OpenSearch UI in Amazon OpenSearch Service" We have overhauled and expanded the chapter [Using OpenSearch UI in Amazon OpenSearch Service](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application.html), including expanded procedures, additional setup details, and a new [release history](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application-release-history.html) of Amazon OpenSearch Service support for OpenSearch UI.Amazon Q Developer for Amazon OpenSearch Service[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support.html) Amazon Q integration with Amazon OpenSearch Service offers the following generative capabilities: + [Generate visualizations using natural language](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-generate-visualizations.html) + [View alert summaries and insights](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-alert-summary.html) + [View Amazon Q-generated query result summaries on the Discover page](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-query-summary.html) + [View recommended anomaly detectors](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-anomaly-detectors.html) + [Access Amazon Q chat for OpenSearch-related questions](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-chat-interface.html)The AmazonOpenSearchServiceRolePolicy managed policy was updated[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html#ac-managed-updates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html#ac-managed-updates) The policy enables OpenSearch to update the access scope of any AWS IAM Identity Center application that is only managed by OpenSearch. OR2 and OM2 instances for Amazon OpenSearch Service[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html) Amazon OpenSearch Service now supports OR2 and OM2 instances. In internal benchmarks, OR2 showed up to 26% better indexing throughput than OR1 and 70% over R7. OM2 showed up to 15% better than OR1 and 66% over M7g.Direct query for CloudWatch Logs and Security Lake[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/direct-query.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/direct-query.html) Amazon OpenSearch Service now supports *direct queries* to query data in CloudWatch Logs and Security Lake.k-NN indexes Starting with OpenSearch version 2.17, you can move k-NN indexes to the UltraWarm and cold storage tiers.OpenSearch 2.17 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 2.17. This version includes all features that were part of versions 2.16 and 2.17. For more information, see the [2.16](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.16.0.md) and [2.17](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.17.0.md) release notes.OpenSearch 2.15 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 2.15. This version includes all features that were part of versions 2.14 and 2.15. For more information, see the [2.14](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.14.0.md) and [2.15](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.15.0.md) release notes.New service-linked role[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/slr-osis.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/slr-osis.html) Amazon OpenSearch Service adds a service-linked role called `AWSServiceRoleForOpensearchIngestionSelfManagedVpce`, which allows Amazon OpenSearch Ingestion to send metric data to Amazon CloudWatch for pipelines with self-managed VPC endpoints.Direct queries[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/direct-query-s3.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/direct-query-s3.html) Amazon OpenSearch Service now supports running queries directly on data stored in Amazon S3, without needing to ingest the data into an OpenSearch index.OpenSearch 2.13 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 2.13. This version includes all features that were part of versions 2.12 and 2.13. For more information, see the [2.12](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.12.0.md) and [2.13](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.13.0.md) release notes.Amazon OpenSearch Ingestion support for Data Prepper version 2.7[https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) Amazon OpenSearch Ingestion adds support for Data Prepper version 2.7. For more information, see the [2.7 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.7.0).AWS service private access for OpenSearch Serverless collections[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-network.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-network.html) You can now grant specific AWS services, such as Amazon Bedrock, access to your OpenSearch Serverless collections within a network access policy.In-place EBS updates[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html) You can now make some EBS changes to your domains without a blue/green deployment in Amazon OpenSearch Service. Configuration change visibility[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#initiating-tracking-configuration-changes](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#initiating-tracking-configuration-changes) You can now track domain configuration changes in the Amazon OpenSearch Service console and using the configuration API.Amazon OpenSearch Ingestion support for Data Prepper version 2.6[https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) Amazon OpenSearch Ingestion adds support for Data Prepper version 2.6. For more information, see the [2.6 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.6.0). In addition, you can specify Amazon DynamoDB as a pipeline source. For more information, see [Using an OpenSearch Ingestion pipeline with Amazon DynamoDB](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client-ddb).Direct queries with Amazon S3 (preview)[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/direct-query-s3.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/direct-query-s3.html) Direct queries provide a fully managed solution for making transactional data available in Amazon OpenSearch Service within seconds of it being written to an Amazon S3 bucket. OR1 instances[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/or1.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/or1.html) Amazon OpenSearch Service now supports OR1 instance types.Vector search collections general availability[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-vector-search.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-vector-search.html) Amazon OpenSearch Serverless *vector search* collections are now generally available. The following notable improvements were made during the preview phase: + Vector search collections now supports workloads with billion of vectors, each with up to 128 dimensions. + OpenSearch Dashboards now supports vector search collections.10 TiB capacity for time series collections[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-scaling-limits.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-scaling-limits.html) Amazon OpenSearch Serverless adds support for up to 10 TiB of index data for *time series* collections. This release also supports a maximum allowed capacity of 200 OCUs for all types of collections and the ability to disable standby replicas when you create a collection.OpenSearch 2.11 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 2.11. This version includes all features that were part of versions 2.10 and 2.11. For more information, see the [2.10](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.10.0.md) and [2.11](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.11.0.md) release notes.Amazon OpenSearch Ingestion support for Data Prepper version 2.5[https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) Amazon OpenSearch Ingestion adds support for Data Prepper version 2.5. For more information, see the [2.5 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.5.0). In addition, you can now specify an OpenSearch Service domain or OpenSearch Serverless collection as a pipeline source. For more information, see the [OpenSearch source plugin](https://opensearch.org/docs/latest/data-prepper/pipelines/configuration/sources/opensearch/) in the Data Prepper documentaion.CloudFormation template for remote inference[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cfn-template.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cfn-template.html) To ease the setup of remote inference for semantic search, Amazon OpenSearch Service provides an AWS CloudFormation template in the console that automates the model provisioning process for you.Update to service-linked role policy[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html#AmazonOpenSearchServiceRolePolicy](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html#AmazonOpenSearchServiceRolePolicy) Adds the permissions necessary for [the service-linked role](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/slr-aos.html#slr-permissions) policy `AmazonOpenSearchServiceRolePolicy` to assign and unassign IPv6 addresses. The deprecated Elasticsearch policy `AmazonElasticsearchServiceRolePolicy` has also been updated to ensure backwards compatibility.Amazon OpenSearch Serverless lifecycle policies[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-lifecycle.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-lifecycle.html) Amazon OpenSearch Serverless introduces index lifecycle policies to streamline the management of data retention and deletion. You can now use APIs or a configuration interface in the console to set data retention polices for *time series* collections, eliminating the need for creating daily indexes or scripts to delete old data.Im4gn instance support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html) Amazon OpenSearch Service now supports Im4gn instance types. Im4gn instances are optimized for workloads that manage large datasets and need high storage density per vCPU.Administrative options[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/admin-options.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/admin-options.html) Amazon OpenSearch Service now offers several administrative options that provide granular control if you need to troubleshoot issues with your domain. These options include the ability to restart the OpenSearch process on a data node and the ability to restart a data node.Optional plugins[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-plugins.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-plugins.html) Amazon OpenSearch Service adds support for four new language analyzer plugins: Nori (Korean), Sudachi (Japanese), Pinyin (Chinese), and STConvert Analysis (Chinese), as well as the Amazon Personalize Search Ranking plugin.OpenSearch 2.9 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 2.9. This version includes all features that were part of versions 2.8 and 2.9. For more information, see the [2.8](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.8.0.md) and [2.9](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.9.0.md) release notes.ML connectors[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ml-amazon-connector.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ml-amazon-connector.html) Amazon OpenSearch Service adds support for machine learning (ML) connectors. Connectors facilitate access to ML models hosted on other AWS services, or on third-party machine learning (ML) platforms.Amazon OpenSearch Ingestion adds support for Data Prepper version 2.4[https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) Amazon OpenSearch Ingestion adds support for Data Prepper version 2.4. For more information, see the [2.4 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.4.0). In addition, you can now specify Amazon Managed Streaming for Apache Kafka (Amazon MSK) as a pipeline source.6 TiB capacity for time series collections[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-scaling-limits.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-scaling-limits.html) Amazon OpenSearch Serverless adds support for up to 6 TiB of index data for *time series* collections. This release also supports a maximum allowed capacity of 100 OCUs for both *search* and *time series* collections.Vector search collections[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-vector-search.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-vector-search.html) Amazon OpenSearch Serverless adds the option to create a *vector search* collection, which you can use to store vector embeddings to power similiarity and semantic searches.OpenSearch 2.7 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 2.7. This version includes all features that were part of versions 2.6 and 2.7. For more information, see the [2.6](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.6.0.md) and [2.7](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.7.0.md) release notes.Data Prepper 2.3 support[https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) Amazon OpenSearch Ingestion adds support Data Prepper version 2.3. For more information, see the [2.3 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.3.0). In addition, you can now specify Amazon Security Lake as a pipeline source.Multi-AZ with Standby[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-multiaz.html#managedomains-za-standby.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-multiaz.html#managedomains-za-standby.html) Amazon OpenSearch Service adds the option to deploy a domain across three Availability Zones (AZs), with each AZ containing a complete copy of data and with nodes in one of these AZs acting as a standby. The Multi-AZ with Standby deployment option provides 99.99% availability and consistent performance in the event of an infrastructure failure.Amazon OpenSearch Ingestion[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ingestion.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ingestion.html) Amazon OpenSearch Ingestion is a fully managed data collector that delivers real-time log and trace data to OpenSearch Service domains and OpenSearch Serverless collections. OpenSearch Ingestion eliminates the need for you to use third-party solutions like Logstash or Jaeger to ingest data into your domains and collections.New service-linked role[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/slr-osis.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/slr-osis.html) Amazon OpenSearch Service adds a service-linked role called `AWSServiceRoleForAmazonOpenSearchIngestionService`, which allows Amazon OpenSearch Ingestion to send metric data to Amazon CloudWatch.OpenSearch 2.5 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 2.5. This version includes all features that were part of versions 2.4 and 2.5. For more information, see the [2.4](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.4.0.md) and [2.5](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.5.0.md) release notes.Off-peak maintenance windows[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/off-peak.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/off-peak.html) Amazon OpenSearch Service adds off-peak windows, which are daily 10-hour, low-traffic time blocks during which it can schedule service software updates and Auto-Tune optimizations that require a blue/green deployment. Off-peak updates help to minimize strain on a cluster's dedicated master nodes during higher traffic periods. For new domains created after February 16, the off-peak window is automatically configured for between 10:00 P.M. and 8:00 A.M. local time. For existing domains, you need to explicitly enable the window.Configure SAML authentication during domain creation[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/saml.html#saml-configure-new](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/saml.html#saml-configure-new) Amazon OpenSearch Service now supports configuring SAML authentication during domain creation. Previously, you had to configure SAML options after the domain was already created.Remote reindex for VPC domains[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/remote-reindex.html#remote-reindex-vpc](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/remote-reindex.html#remote-reindex-vpc) Amazon OpenSearch Service adds the option for a VPC endpoint connection between two domains. You can now use remote reindex to copy indexes from one VPC domain to another without a reverse proxy. Your VPC domains must be running service software R20221114 or later to use this feature.Amazon OpenSearch Serverless general availability[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless.html) Amazon OpenSearch Serverless is now generally available. The following notable improvements were made during the preview phase: + Capacity can now scale *down* to the minimum configured OCUs when there's a decrease in traffic on the collection endpoint. + The maximum allowed OCUs for both indexing and search was increased from 20 to 50. Each OCU includes enough hot ephemeral storage for 120 GiB of index data. + You can now configure data access settings while creating collections, rather than having to configure them in a separate workflow.Async dry run[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#dryrun](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#dryrun) Amazon OpenSearch Service now supports async dry run, which allows you to perform a validation check prior to making a configuration change, and notifies you if your changes will cause a blue/green deployment.Amazon OpenSearch Serverless preview[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless.html) Amazon OpenSearch Serverless is an on-demand, auto scaling, serverless configuration for Amazon OpenSearch Service. Serverless removes the operational complexities of provisioning, configuring, and tuning your OpenSearch clusters.New service-linked role[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-service-linked-roles.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-service-linked-roles.html) Amazon OpenSearch Service adds a service-linked role called `AWSServiceRoleForAmazonOpenSearchServerless`, which allows OpenSearch Serverless to send metric data to Amazon CloudWatch.Notifications plugin support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/alerting.html#alerting-notifications](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/alerting.html#alerting-notifications) Amazon OpenSearch Service now supports the Notifications plugin, which offers a central location for all of your notifications from OpenSearch plugins. Starting with version 2.0, alerting destinations were deprecated and replaced with notification *channels*.OpenSearch 2.3 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 2.3. This version includes all features that were part versions 2.0, 2.1, and 2.2. For more information, see the [2.0](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.0.0.md), [2.1](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.1.0.md), [2.2](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.2.0.md), and [2.3](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.3.0.md) release notes. Version 2.3 contains a **breaking change**. For more information, see [Supported upgrade paths](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html#supported-upgrade-paths).Kibana 7.1.1 support[https://www.elastic.co/guide/en/kibana/7.1/release-notes-7.1.1.html](https://www.elastic.co/guide/en/kibana/7.1/release-notes-7.1.1.html) Amazon OpenSearch Service domains running Elasticsearch 7.1 now support the latest patch release for Kibana 7.1.1, which adds bug fixes and improves security. When you update your 7.1 domains to service software R20221114, OpenSearch Service will automatically upgrade them to this patch release.Kibana 6.8.13 support[https://www.elastic.co/guide/en/kibana/6.8/release-notes-6.8.13.html](https://www.elastic.co/guide/en/kibana/6.8/release-notes-6.8.13.html) Amazon OpenSearch Service domains running Elasticsearch 6.8 now support the latest patch release for Kibana 6.8.13, which adds bug fixes and improves security. When you update your 6.8 domains to service software R20221114, OpenSearch Service will automatically upgrade them to this patch release.Kibana 6.3.2 support[https://www.elastic.co/guide/en/kibana/6.3/release-notes-6.3.2.html](https://www.elastic.co/guide/en/kibana/6.3/release-notes-6.3.2.html) Amazon OpenSearch Service domains running Elasticsearch 6.3 now support the latest patch release for Kibana 6.3.2, which adds bug fixes and improves security. When you update your 6.3 domains to service software R20221114, OpenSearch Service will automatically upgrade them to this patch release.AWS PrivateLink[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/vpc-interface-endpoints.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/vpc-interface-endpoints.html) With Amazon OpenSearch Service-managed VPC endpoints, you can connect directly to OpenSearch Service VPC domains by using an interface VPC endpoint instead of connecting over the internet. An OpenSearch Service-managed VPC endpoint is accessible only within the VPC where the endpoint is provisioned, or from any VPCs peered with the VPC where the endpoint is provisioned, as permitted by the route tables and security groups. Your VPC domain must be running service software R20220928 or later to connect to an interface VPC endpoint.Bug fixes and performance improvements Service software R20220928 includes bug fixes and performance enhancements, including improved SAML logging. The update also changes the default tenant to `Global` rather than `Private`.Improved API reference[https://docs.aws.amazon.com/opensearch-service/latest/APIReference/Welcome.html](https://docs.aws.amazon.com/opensearch-service/latest/APIReference/Welcome.html) Amazon OpenSearch Service offers an improved, all-encompassing configuration API reference. The new references contains all available actions and data types, sample request and response syntax, and links to the corresponding SDK references for all supported languages.Blue/green validation[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#validation](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#validation) Amazon OpenSearch Service now performs a validation check prior to blue/green deployments, and surfaces validation errors if your domain is not eligible for an update.OpenSearch 1.3 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 1.3. For more information, see the [1.3 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-1.3.0.md).ML Commons plugin support[https://opensearch.org/docs/latest/ml-commons-plugin/index/](https://opensearch.org/docs/latest/ml-commons-plugin/index/) Amazon OpenSearch Service adds support for the ML Commons plugin, which provides a set of common machine learning algorithms through transport and [REST API calls](https://opensearch.org/docs/latest/ml-commons-plugin/api). You can also interact with the ML Commons plugin through PPL commands.gp3 volume support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html#ebsresource](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html#ebsresource) Amazon OpenSearch Service adds support for the `gp3` EBS General Purpose SSD volume type. You can specify additional provisioned IOPS and throughput when you create or modify the domain.Enhanced best practices documentation[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/bp.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/bp.html) The Amazon OpenSearch Service documentation provides improved operational best practices and general recommendations for creating and operating OpenSearch Service domains.Integration with Service Quotas[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html) You can now view quotas for Amazon OpenSearch Service, and request quota increases, from the Service Quotas console.Tag-based access control for the OpenSearch API[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac.html#ac-types-identity](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac.html#ac-types-identity) You can now use tags to control access to the OpenSearch APIs. Previously, you could only use tags to control access to the configuration API.Cross-cluster search across Regions Cross-cluster search is now supported across AWS Regions as long as both domains are running Elasticsearch version 7.10 or later, or any version of OpenSearch. R20220323-P1 Amazon OpenSearch Service recently released service software update R20220323, but the update was subsequently rolled back because of an issue. We recommend that you update your domains to patch release R20220323-P1 or later, which fixes the issue.Cross-cluster replication on existing domains Amazon OpenSearch Service removed the limitation that you can only implement cross-cluster search and cross-cluster replication on domains created on or after June 3rd, 2020. You can now enable these features on all domains regardless of when they were created. Both domains must be on service software R20220323 or later.Observability[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/observability.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/observability.html) The default installation of OpenSearch Dashboards for Amazon OpenSearch Service includes the Observability plugin, which you can use to visualize data-driven events using Piped Processing Language (PPL) to explore and query your data. The plugin requires OpenSearch 1.2 or later and service software R20220323 or later.OpenSearch 1.2 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 1.2. For more information, see the [1.2 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-1.2.0.md).JVM memory pressure metric changes[https://aws.amazon.com//blogs/big-data/understanding-the-jvmmemorypressure-metric-changes-in-amazon-opensearch-service/](https://aws.amazon.com//blogs/big-data/understanding-the-jvmmemorypressure-metric-changes-in-amazon-opensearch-service/) Amazon OpenSearch Service changed the logic for the `JVMMemoryPressure` CloudWatch metrics to more accurately reflect memory utilization. Previously, the metrics only considered the old generation memory pool of JVM heap. With this change, the metric also considers the young generation memory pool. After you update your domain to service software R20220323, you might see an increase in the `JVMMemoryPressure`, `MasterJVMMemoryPressure`, and/or `WarmJVMMemoryPressure` metrics.Custom dictionaries with the IK (Chinese) Analysis plugin[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-packages.html#custom-packages-using](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-packages.html#custom-packages-using) Amazon OpenSearch Service now supports using custom dictionaries with the IK (Chinese) Analysis plugin.Kibana 7.7.1 support[https://www.elastic.co/guide/en/kibana/7.7/release-notes-7.7.1.html](https://www.elastic.co/guide/en/kibana/7.7/release-notes-7.7.1.html) Amazon OpenSearch Service domains running Elasticsearch 7.7 now support the latest patch release for Kibana 7.7, which adds bug fixes and improves security. When you update your 7.7 domains to service software R20220323 or later, OpenSearch Service will automatically upgrade them to this patch release.Single Kibana 5.6 support[https://www.elastic.co/guide/en/kibana/5.6/release-notes-5.6.16.html](https://www.elastic.co/guide/en/kibana/5.6/release-notes-5.6.16.html) Amazon OpenSearch Service adds support for single Kibana 5.6.16. With single Kibana 5.6.16, you can use Kibana 5.6 as your front end while connecting to Elasticsearch versions 5.1, 5.3, 5.5, and 5.6. You must be on service software R20220323 or later to use single Kibana 5.6.Blue/green deployment visibility[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#managedomains-config-stages](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#managedomains-config-stages) Amazon OpenSearch Service now offers more visibility into the progress of blue/green deployments. You can monitor these details in the console or using the configuration API.Fine-grained access control on existing domains[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/fgac.html#fgac-enabling](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/fgac.html#fgac-enabling) You can now enable fine-grained access control on existing domains. You can enable a temporary migration period for open/IP-based access policies to ensure that users can continue to access your domain while you create and map roles. Enabling fine-grained access control on existing domains requires service software R20211203 or later.Renamed OpenSearch Dashboards roles[https://opensearch.org/docs/latest/security-plugin/access-control/users-roles/#predefined-roles](https://opensearch.org/docs/latest/security-plugin/access-control/users-roles/#predefined-roles) With service software R20211203, the `kibana_user` role was renamed to `opensearch_dashboards_user`, and `kibana_read_only` was renamed to `opensearch_dashboards_read_only`. This change applies to all *newly-created* OpenSearch 1.*x* domains. For existing OpenSearch domains that you upgrade to service software R20211203, the roles remain the same.ISM visual editor[https://opensearch.org/docs/latest/im-plugin/ism/index/#visual-editor](https://opensearch.org/docs/latest/im-plugin/ism/index/#visual-editor) The default installation of OpenSearch Dashboards for Amazon OpenSearch Service now supports the visual editor for ISM policies. This feature requires OpenSearch 1.1 or later.OpenSearch 1.1 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports OpenSearch version 1.1. For more information, see the [1.1 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-1.1.0.md).Cross-service confused deputy prevention update[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cross-service-confused-deputy-prevention.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cross-service-confused-deputy-prevention.html) Amazon OpenSearch Service supports using the `aws:SourceArn` and `aws:SourceAccount` global condition context keys in IAM resource policies to prevent the confused deputy problem. You must be on service software R20211203 or later to use these condition keys.Log4j patch Service software R20211203-P2 updates the version of Log4j used in OpenSearch Service as recommended by the advisories in [CVE-2021-44228](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44228) and [CVE-2021-45046](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45046). The patch applies to domains running all versions of OpenSearch and Elasticsearch. OpenSearch Service will continue to update various Log4j versions internally, and they will not necessarily be restricted to the latest version of Log4j. The Log4j version on your domain depends on the software version that the domain is running. However, irrespective of the Log4j version, as long as you're running R20211203-P2 or later, your domains contain the Log4j update required to address CVE-2021-44228 and CVE-2021-45046.Cross-cluster replication[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/replication.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/replication.html) Cross-cluster replication lets you replicate indices, mappings, and metadata from one OpenSearch Service domain to another. Cross-cluster replication requires a domain running Elasticsearch 7.10 or OpenSearch 1.1 or later.Amazon OpenSearch Service[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/rename.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/rename.html) AWS renames Amazon OpenSearch Service to remove the legacy "Elasticsearch" branding. Amazon OpenSearch Service supports OpenSearch and legacy Elasticsearch OSS. When you create a cluster, you have the option of which search engine to use. OpenSearch Service offers broad compatibility with Elasticsearch OSS 7.10, the final open source version of the software.Kibana 6.4.3 support[https://www.elastic.co/guide/en/kibana/6.4/release-notes-6.4.3.html](https://www.elastic.co/guide/en/kibana/6.4/release-notes-6.4.3.html) Amazon OpenSearch Service domains running legacy Elasticsearch version 6.4 now support the latest patch release for Kibana 6.4, which adds bug fixes and improves security. OpenSearch Service will automatically upgrade domains to this patch release.New AWS-managed policies[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html) The launch of Amazon OpenSearch Service includes new AWS-managed policies and the deprecation of old policies.Data streams[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/data-streams.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/data-streams.html) Amazon OpenSearch Service adds support for data streams, which simplify the process of managing time-series data. Your domain must be running OpenSearch 1.0 or later to use data streams.Cold storage[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cold-storage.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cold-storage.html) Cold storage is a new storage tier for infrequently accessed or historical data. Cold indices only occupy S3 storage and have no compute attached to them. Cold storage requires a domain running Elasticsearch 7.9 or later and service software R20210426 or later.ARM-based Graviton instances[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html) Amazon OpenSearch Service now supports ARM-based Graviton instance types (M6G, C6G, R6G, and R6GD). Graviton instance types are available on new and existing domains running Elasticsearch 7.9 or later and service software R20210331 or later.ISM templates[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ism.html#ism-template.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ism.html#ism-template.html) Amazon OpenSearch Service adds support for ISM templates, which let you automatically attach an ISM policy to an index if the index matches a pattern defined in the policy. ISM templates require service software R20210426 or later. This update also deprecates the `policy_id` setting, meaning you can no longer use index templates to apply ISM policies to newly created indices. The update introduces a breaking change for existing CloudFormation templates using this setting.Elasticsearch 7.10 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports Elasticsearch version 7.10. For more information, see [7.10 release notes](https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.10.0.html).Asynchronous search[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/asynchronous-search.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/asynchronous-search.html) Amazon OpenSearch Service now supports asynchronous search, which lets you run search requests in the background. Asynchronous search requires a domain running Elasticsearch 7.10 or later and service software R20210331 or later.Tag-based access control for the configuration API[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac.html) You can now use AWS tags to control access to the Amazon ES configuration API.Auto-Tune[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/auto-tune.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/auto-tune.html) Amazon OpenSearch Service adds Auto-Tune, which uses performance and usage metrics from your cluster to suggest changes to the JVM settings on your nodes. Auto-Tune requires a domain running Elasticsearch 6.7 or later and service software R20201117 or later.Shard metrics[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-cloudwatchmetrics.html#managedomains-cloudwatchmetrics-cluster-metrics](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-cloudwatchmetrics.html#managedomains-cloudwatchmetrics-cluster-metrics) Amazon OpenSearch Service adds the following CloudWatch metrics for tracking shard status: `Shards.active`, `Shards.unassigned`, `Shards.delayedUnassigned``Shards.activePrimary`, `Shards.initializing`, `Shards.relocating`. The metrics are available on domains running service software R20210201 or later.Trace Analytics[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/trace-analytics.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/trace-analytics.html) The default installation of Kibana for Amazon OpenSearch Service now includes the trace analytics plugin, which lets you monitor trace data from your distributed applications. The plugin requires a domain running Elasticsearch 7.9 or later and service software R20210201 or later.Kibana reports[https://opensearch.org/docs/latest/dashboards/reporting/](https://opensearch.org/docs/latest/dashboards/reporting/) The default installation of Kibana for Amazon OpenSearch Service now supports on-demand reports for the Discover, Visualize, and Dashboard pages. This feature requires Elasticsearch 7.9 or later and service software R20210201 or later.Kibana 5.6.16 support Amazon OpenSearch Service domains running Elasticsearch 5.6 now support the latest patch release for Kibana 5.6, which adds bug fixes and improves security. Amazon ES will automatically upgrade domains to this patch release.Encryption for existing domains[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/trace-analytics.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/trace-analytics.html) Amazon OpenSearch Service now supports enabling encryption of data at rest and node-to-node encryption on existing domains running Elasticsearch 6.7 or later. After you enable these settings, you can't disable them.Elasticsearch 7.9 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports Elasticsearch version 7.9. For more information, see [7.9 release notes](https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.9.0.html).Gantt charts The default installation of Kibana for Amazon OpenSearch Service now supports a new visualization type, Gantt charts. This feature requires service software R20201117 or later.Remote reindex[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/remote-reindex.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/remote-reindex.html) Amazon OpenSearch Service now supports remote reindex, which lets you migrate indices from remote domains. This feature requires service software R20201117 or later.Piped Processing Language[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ppl-support.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ppl-support.html) Amazon OpenSearch Service now supports Piped Processing Language (PPL), a query language that lets you use pipe (\$1) syntax to query data stored in Elasticsearch. This feature requires service software R20201117 or later. To learn more, see .Anomaly detection updates[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ad.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ad.html) Anomaly detection for Amazon OpenSearch Service adds support for high cardinality, which lets you categorize anomalies with a dimension like IP address, product ID, country code, and so on. This feature requires service software R20201117 or later.Kibana notebooks Amazon OpenSearch Service adds support for Kibana notebooks, which lets you combine live visualizations and narrative text in a single interface. This feature requires service software R20201117 or later.Dynamic dictionary updates[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-packages.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-packages.html) Amazon OpenSearch Service now lets you update your search analyzers without reindexing. You can update the dictionary files on some or all of your domains, and Amazon ES tracks package versions over time so that you have a history of what changed and when. This feature requires service software R20201019 or later.Custom endpoints[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/customendpoint.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/customendpoint.html) Amazon OpenSearch Service now supports custom endpoints, which let you give your Amazon ES domain a new URL. If you ever swap domains, you can maintain the same URL. This feature requires service software R20201019 or later.New language plugins[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-plugins.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-plugins.html) Amazon OpenSearch Service now supports IK (Chinese) Analysis, Vietnamese Analysis, and Thai Analysis plugins on domains running Elasticsearch 7.7 or later with service software R20201019 or later.Elasticsearch 7.8 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports Elasticsearch version 7.8. For more information, see [7.8 release notes](https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.8.0.html).SAML authentication for Kibana[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/saml.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/saml.html) Amazon OpenSearch Service now supports SAML authentication for Kibana, which lets you use third-party identity providers to log in to Kibana, manage fine-grained access control, search your data, and build visualizations. This feature requires service software R20201019 or later.T3 instances[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/bp.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/bp.html) Amazon OpenSearch Service now supports the `t3.small` and `t3.medium` instance types.Audit logs[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/audit-logs.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/audit-logs.html) Amazon OpenSearch Service now supports audit logs for your data, which lets you track failed login attempts, user access to indices, documents, and fields, and much more. This feature requires service software R20200910 or later.UltraWarm updates[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html) UltraWarm for Amazon OpenSearch Service adds new metrics, new settings, a larger migration queue, and a cancellation API. These updates require service software R20200910 or later. For more information, see .Learning to Rank[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/learning-to-rank.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/learning-to-rank.html) Amazon OpenSearch Service now supports the open source Learning to Rank plugin, which lets you use machine learning technologies to improve search relevance. This feature requires service software R20200721 or later.gzip compression[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/gzip.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/gzip.html) Amazon OpenSearch Service now supports gzip compression for most HTTP requests and responses, which can reduce latency and conserve bandwidth. This feature requires service software R20200721 or later.k-NN cosine similarity[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/knn.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/knn.html) k-Nearest Neighbor (k-NN) now lets you search for "nearest neighbors" by cosine similarity in addition to Euclidean distance. This feature requires service software R20200721 or later.Elasticsearch 7.7 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports Elasticsearch version 7.7. For more information, see [7.7 release notes](https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.7.0.html).Kibana map service[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/dashboards.html#dashboards-map-server](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/dashboards.html#dashboards-map-server) The default installation of Kibana for Amazon OpenSearch Service now includes a WMS map server, except for domains in the India and China Regions.Cross-cluster search[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cross-cluster-search.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cross-cluster-search.html) Amazon OpenSearch Service lets you perform cross-cluster queries and aggregations across multiple connected domains.SQL improvements[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/sql-support.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/sql-support.html) SQL support for Amazon OpenSearch Service now supports many new operations, a dedicated Kibana user interface for data exploration, and an interactive CLI.Anomaly detection[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ad.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ad.html) Amazon OpenSearch Service lets you automatically detect anomalies in near-real time.UltraWarm[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html) UltraWarm storage for Amazon OpenSearch Service has left public preview and is now generally available. The feature now supports a wider range of versions and AWS Regions. For more information, see .Custom dictionaries[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-packages.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-packages.html) Amazon OpenSearch Service lets you upload custom dictionary files for use with your cluster. These files improve your search results by telling Elasticsearch to ignore certain high-frequency words or to treat terms as equivalent. Elasticsearch 7.4 Support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports Elasticsearch version 7.4. For more information, see [Supported versions](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version).Index State Management[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ism.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ism.html) Amazon OpenSearch Service adds Index State Management (ISM), which lets you automate routine tasks, such as deleting indices when they reach a certain age. This feature requires service software R20200302 or later.k-NN[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/knn.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/knn.html) Amazon OpenSearch Service adds support for k-Nearest Neighbor (k-NN) search. k-NN requires service software R20200302 or later.Elasticsearch 5.6.16 support Amazon OpenSearch Service now supports the latest patch release for version 5.6, which adds bug fixes and improves security. Amazon ES will automatically upgrade existing 5.6 domains to this release. Note that this Elasticsearch release incorrectly reports its version as 5.6.17.Fine-grained access control[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/fgac.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/fgac.html) Amazon OpenSearch Service now supports fine-grained access control, which offers security at the index, document, and field level, Kibana multi-tenancy, and optional HTTP basic authentication for your cluster.UltraWarm storage (preview)[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html) Amazon OpenSearch Service adds UltraWarm, a new warm storage tier that uses Amazon S3 and a sophisticated caching solution to improve performance. For indices that you are not actively writing to and query less frequently, UltraWarm storage offers significantly lower costs per GiB.Encryption features for China Regions Encryption of data at rest and node-to-node encryption are now available in the `cn-north-1` China (Beijing) Region and `cn-northwest-1` China (Ningxia) Region.Require HTTPS You can now require that all traffic to your Amazon ES domains arrive over HTTPS. When configuring your domain, check the **Require HTTPS** box. This feature requires service software R20190808 or later.Elasticsearch 7.1 and 6.8 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports Elasticsearch version 7.1 and 6.8. For more information, see [Supported versions](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version).Hourly snapshots[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-snapshots.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-snapshots.html) Rather than daily snapshots, Amazon OpenSearch Service now takes hourly snapshots of domains running Elasticsearch 5.3 and later so that you have more frequent backups from which to restore your data.Elasticsearch 6.7 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports Elasticsearch version 6.7. For more information, see [Supported versions](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version).SQL support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/sql-support.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/sql-support.html) Amazon OpenSearch Service now lets you query your data using SQL. SQL support requires service software R20190418 or later.5-series instance types[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html) Amazon OpenSearch Service now supports M5, C5, and R5 instance types. Compared to previous-generation instance types, these new types offer better performance at lower prices. For more information, see [Limits](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html).Elasticsearch 6.5 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version) Amazon OpenSearch Service now supports Elasticsearch version 6.5.Alerting[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/alerting.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/alerting.html) Alerting for Amazon OpenSearch Service notifies you when data from one or more Amazon ES indices meets certain conditions. Alerting requires service software R20190221 or later.Three Availability Zone support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-multiaz.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-multiaz.html) Amazon OpenSearch Service now supports three Availability Zones in many Regions. This release also includes a streamlined console experience. This multi-AZ requires service software R20181023 or later.Elasticsearch 6.4 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version) Amazon OpenSearch Service now supports Elasticsearch version 6.4.200-node clusters[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/petabyte-scale.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/petabyte-scale.html) Amazon ES now lets you create clusters with up to 200 data nodes for a total of 3 PB of storage.Service software updates[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html) Amazon ES now lets you manually update the service software for your domain in order to benefit from new features more quickly or update at a low traffic time. To learn more, see .New CloudWatch metrics[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-cloudwatchmetrics.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-cloudwatchmetrics.html) Amazon ES now offers node-level metrics and new **Cluster health** and **Instance health** tabs in the Amazon ES console.China (Beijing) support Amazon OpenSearch Service is now available in the cn-north-1 Region, where it supports the M4, C4, and R4 instance types.Node-to-node encryption[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ntn.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ntn.html) Amazon OpenSearch Service now supports node-to-node encryption, which keeps your data encrypted as Amazon ES distributes it throughout your cluster.Elasticsearch 6.3 and 5.6 support[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version) Amazon OpenSearch Service now supports Elasticsearch version 6.3 and 5.6.In-place version upgrades[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) Amazon OpenSearch Service now supports in-place version upgrades.Error logs[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/createdomain-configure-slow-logs.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/createdomain-configure-slow-logs.html) Amazon ES now lets you publish Elasticsearch error logs to Amazon CloudWatch.China (Ningxia) Reserved Instances Amazon ES now offers Reserved Instances in the China (Ningxia) Region.Reserved Instances[https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ri.html](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ri.html) Amazon ES now offers support for Reserved Instances. This topic describes important changes to Amazon OpenSearch Service. Service software updates add support for new features, security patches, bug fixes, and other improvements. To use new features, you might need to update the service software on your domain. For more information, see [Service software updates in Amazon OpenSearch Service](service-software.md). Service features are rolled out incrementally to the AWS Regions where a service is available. We update this documentation for the first release only. We don't provide information about Region availability or announce subsequent Region rollouts. For information about Region availability of service features, and to subscribe to notifications about updates, see [What's New with AWS?](https://aws.amazon.com/new) For notifications about updates, you can subscribe to the RSS feed. **Note** **Patch releases**: Service software versions that end in "-P" and a number, such as R20211203-P4, are patch releases. Patches are likely to include performance improvements, minor bug fixes, and security fixes or posture improvements. Since patches do not include new features or breaking changes, they generally do not have direct user or documentation impact, which is why the specifics of each patch are not included in this document history. | Change | Description | Date | | --- |--- |--- | | [Support for OpenSearch 3.5](#release-notes) | Amazon OpenSearch Service supports OpenSearch version 3.4 and 3.5. For more information, see [OpenSearch 3.4 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.4.0.md) and [OpenSearch 3.5 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.5.0.md). For information about OpenSearch 3.4 and 3.5 operations, see the [OpenSearch REST API reference](https://docs.opensearch.org/latest/api-reference/), or the API reference for the specific plugin. For a complete list of breaking changes, refer to the OpenSearch documentation [here](https://docs.opensearch.org/latest/breaking-changes/). | March 17, 2026 | | [New features: GPU acceleration for vector indexes, auto-optimize, and vector ingestion](#release-notes) | Amazon OpenSearch Service now supports GPU acceleration for vector indexes, enabling faster vector search operations. Amazon OpenSearch Service also introduces auto-optimize to automatically tune collection performance and vector ingestion for simplified data loading. For more information, see [GPU acceleration for vector indexes](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/gpu-acceleration-vector-index.html), [Auto-optimize](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-auto-optimize.html), and [Vector ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-vector-ingestion.html). | December 2, 2025 | | [Support for OpenSearch 3.3](#release-notes) | Amazon OpenSearch Service supports OpenSearch version 3.2 and 3.3. For more information, see [OpenSearch 3.2 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.2.0.md) and [OpenSearch 3.3 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.3.0.md). For information about OpenSearch 3.2 and 3.3 operations, see the [OpenSearch REST API reference](https://docs.opensearch.org/latest/api-reference/), or the API reference for the specific plugin. | November 19, 2025 | | [Support for Graviton4-based instance families (c8g,m8g,r8g r8gd)](#release-notes) | Amazon OpenSearch Service now supports Graviton4-based instance families (c8g, m8g, r8g, r8gd). For more information, see [Supported instance types in Amazon OpenSearch Service](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html.html). | October 17, 2025 | | [New feature: OpenSearch Ingestion machine learning offline batch inference](#release-notes) | Amazon OpenSearch Ingestion (OSI) pipelines support machine learning (ML) offline batch inference processing to efficiently enrich large volumes of data at low cost. Use offline batch inference whenever you have large datasets that can be processed asynchronously. Offline batch inference works with Amazon Bedrock and SageMaker models. This feature is available in all AWS Regions that support OpenSearch Ingestion with OpenSearch Service 2.17\$1 domains. For more information, see [Using an OpenSearch Ingestion pipeline with machine learning offline batch inference](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-clients-ml-commons-batch.html). | October 2, 2025 | | [New feature: CloudFormation templates to configure remote inference for semantic highlighting](#release-notes) | Semantic highlighting is an advanced search feature that enhances result relevance by analyzing the meaning and context of queries rather than relying solely on exact keyword matches. This capability uses machine learning models to evaluate semantic similarity between search queries and document content, identifying and highlighting the most contextually relevant sentences or passages within documents. Amazon OpenSearch Service now includes a CloudFormation templates that automatically configures Amazon SageMaker models for semantic highlighting. For more information, see [Remote inference for semantic highlighting templates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ml.html#cfn-template-semantic-highlighting). | September 26, 2025 | | [The AmazonOpenSearchIngestionServiceRolePolicy managed policy was updated](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html#ac-managed-updates) | The update gives OpenSearch Ingestion permission to modify VPC endpoints created by OpenSearch in order to share pipelines across VPCs. | September 19, 2025 | | [New feature: Configure OpenSearch Ingestion pipelines for cross-account ingestion](#release-notes) | For push-based sources such as HTTP and OTel, Amazon OpenSearch Ingestion enables you to share pipelines across AWS accounts from a virtual private cloud (VPC) to a pipeline endpoint in a separate VPC. For more information, see [Configuring OpenSearch Ingestion pipelines for cross-account ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cross-account-pipelines.html) | September 19, 2025 | | [Amazon OpenSearch Serverless supports disk-based vector search](#release-notes) | Disk-based vector search significantly reduces the operational costs for vector workloads in low-memory environments. For more information, see [Disk-based vector search](https://docs.opensearch.org/2.19/vector-search/optimizing-storage/disk-based-vector-search/). | September 18, 2025 | | [Support for OpenSearch 3.1](#release-notes) | Amazon OpenSearch Service supports OpenSearch version 3.1. For information about upgrade compatability, see [Supported upgrade paths](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html#supported-upgrade-paths). For more information about changes in the new versions, see the OpenSearch [3.0](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.0.0.md) and [3.1](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-3.1.0.md) documentation. For information about OpenSearch 3.1 operations, see the [OpenSearch REST API reference](https://opensearch.org/docs/latest/opensearch/rest-api/index/), or the API reference for the specific plugin. | September 9, 2025 | | [Amazon OpenSearch Serverless supports Federal Information Processing Standards (FIPS) 140-2](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/fips-compliance-opensearch-serverless.html) | FIPS 140-2, is a U.S. and Canadian government standard that specifies security requirements for cryptographic modules that protect sensitive information. Amazon OpenSearch Serverless FIPS endpoints are available in AWS Regions where FIPS is supported. These endpoints use TLS 1.2 or later and FIPS-validated cryptographic algorithms for all communications. | September 5, 2025 | | [New feature: SAML attribute-based fine-grained access control](#release-notes) | Amazon OpenSearch Service supports fine-grained access control with SAML to dynamically map users and groups from your identity provider to OpenSearch fine-grained access control users and roles. You can scope these roles to specific OpenSearch domains and serverless collections, and define index-level permissions and document-level security. For more information, see [Configure SAML attribute-based fine-grained access control](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application-enable-SAML-identity-federation.html#SAML-identity-federation-step-5). | August 8, 2025 | | [New topic: OpenSearch UI endpoints and quotas](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/opensearch-ui-endpoints-quotas.html) | Amazon OpenSearch UI expands its modernized operational analytics experience to new AWS Regions, including Asia Pacific (Hyderabad), Asia Pacific (Osaka), Asia Pacific (Seoul), Europe (Milan), Europe (Zurich), Europe (Spain), and US-West (N. California) enabling you to gain insights across data spanning managed domains and serverless collections from a single endpoint. OpenSearch UI can connect to OpenSearch domains above version 1.3 and OpenSearch serverless collections. It is now available in 22 AWS Regions. | August 7, 2025 | | [New features: Automatic semantic enrichment](#release-notes) | Automatic semantic enrichment simplifies semantic search implementation and capabilities in Amazon OpenSearch Service. Semantic search returns query results that incorporate not just keyword matching, but the intent and contextual meaning of the user's search. For more information, see [About automatic semantic enrichment](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-semantic-enrichment.html).Automatic semantic enrichment offers the following benefits: **Simplified implementation** You don't need machine learning (ML) expertise or complex integrations. **Automated process** Semantic enrichment happens automatically during data ingestion. **Improved search relevance** Semantic enrichment enhances the quality and contextual accuracy of search results. **Scalability** Semantic enrichment applies semantic search to large datasets without manual intervention. | August 6, 2025 | | [New feature: Machine Learning on Amazon OpenSearch Serverless](#release-notes) | OpenSearch Serverless now supports Machine Learning capabilities for AI workflows such as RAG (Retrieval-Augmented Generation) and semantic search. Use connectors to access ML algorithms and remote models hosted on third-party platforms or AWS services. For more information, see [Configure Machine Learning on Amazon OpenSearch Serverless](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-configure-machine-learning.html).Machine Learning on OpenSearch Serverless includes the following capabilities: **Neural Search and Hybrid Search** Perform semantic search operations that understand query context and meaning for more relevant results. Combine keyword and semantic search with hybrid search to improve relevance. For more information, see [Configure Neural Search and Hybrid Search on OpenSearch Serverless](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-configure-neural-search.html). **Connectors and Models** Connect to models hosted on third-party ML platforms and AWS services. Configure connectors with models and deploy them to run predictions and AI workflows. **Workflows** Automate complex ML setup and pre-processing tasks by chaining multiple API calls. Workflows simplify building AI applications on OpenSearch. For more information, see [Configure Workflows on OpenSearch Serverless](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-configure-workflows.html). | August 6, 2025 | | [New features: OpenSearch Serverless snapshots](#release-notes) | Snapshots are point-in-time backups of your Amazon OpenSearch Serverless collections that provide disaster recovery capabilities. OpenSearch Serverless automatically creates and manages snapshots of your collections, ensuring business continuity and data protection.**Key benefits** Automatic hourly backups with no manual configuration required Zero maintenance overhead No additional storage costs Quick recovery from accidental data loss Ability to restore specific indices from a snapshot For more information, see [Backing up collections using snapshots](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-snapshots.html). | July 30, 2025 | | [OpenSearch Ingestion supports two new sources](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client.html) | OpenSearch Ingestion now supports the following sources: [Amazon Aurora](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client-aurora.html) [Amazon RDS](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client-rds.html) | July 17, 2025 | | [New features: OpenSearch Service integration with Amazon S3 Vectors](#release-notes) | This integration offers the following features to greatly enhance vector search in OpenSearch Service. Amazon S3 Vectors delivers the first cloud object store with native support to store and query vectors. S3 Vectors provides cost-effective, elastic, and durable vector storage that can be queried based on semantic meaning and similarity. It delivers sub-second query response times and up to 90% lower costs for uploading, storing, and querying vectors. Amazon OpenSearch Service offers the ability to use Amazon S3 as a vector engine for vector indexes. This feature allows you to offload vector data to Amazon S3 while maintaining sub-second vector search capabilities at low cost. For more information, see [(Preview) OpenSearch Service integration with Amazon S3 Vectors](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/s3-vector-opensearch-integration.html). | July 15, 2025 | | [New topic: Atlassian integration with OpenSearch Ingestion](#release-notes) | You can now use Amazon OpenSearch Ingestion pipelines to process data from Atlassian Jira and Confluence services. This integration enables you to create a unified searchable knowledge base by synchronizing complete Jira projects and Confluence spaces into OpenSearch. The integration maintains real-time relevance through continuous monitoring and automatic synchronization of updates, while offering flexible filtering options for specific projects, issue types, and content. For more information, see [Using an OpenSearch Ingestion pipeline with Atlassian Services](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client-atlassian.html). | June 5, 2025 | | [Custom plugin management with the AWS CLI](#release-notes) | You can now manage custom plugins for Amazon OpenSearch Service using the AWS CLI. This feature allows you to install, update, secure, and uninstall custom plugins through a streamlined command-line workflow. You can also secure your plugins with AWS KMS keys and manage plugin upgrades when updating to newer versions of OpenSearch. For more information, see [Managing custom plugins using the AWS CLI](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-plugins.html#managing-custom-plugins-cli) and [Amazon OpenSearch Service custom package AWS KMS integration](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-package-kms-integration.html) | May 27, 2025 | | [Support for OpenSearch 2.19](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-operations.html) | Amazon OpenSearch Service supports OpenSearch version 2.19. For more information, see the OpenSearch [2.19](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.19.0.md) release notes. For information about OpenSearch 2.19 operations, see the [OpenSearch REST API reference](https://opensearch.org/docs/latest/opensearch/rest-api/index/), or the API reference for the specific plugin. | April 30, 2025 | | [New support for specifying pipeline roles in OpenSearch Ingestion](#release-notes) | When you create or update pipeline in Amazon OpenSearch Ingestion, you no longer a specify pipeline role in a YAML format pipeline configuration. Instead, in the console, you specify the role in a new **Pipeline role** field. If you are using the AWS CLI, you use a new `--pipeline-role-arn` parameter. For more information, see the following topics: [Setting up roles and users in Amazon OpenSearch Ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/pipeline-security-overview.html) [Creating Amazon OpenSearch Ingestion pipelines](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/creating-pipeline.html) [Tutorial: Ingesting data into a domain using Amazon OpenSearch Ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/osis-get-started.html) [Tutorial: Ingesting data into a collection using Amazon OpenSearch Ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/osis-serverless-get-started.html) [CreatePipeline](https://docs.aws.amazon.com/opensearch-service/latest/APIReference/API_osis_CreatePipeline.html) [UpdatePipeline](https://docs.aws.amazon.com/opensearch-service/latest/APIReference/API_osis_UpdatePipeline.html) | April 22, 2025 | | [New topic](#release-notes) | The troubleshooting topic [Custom plugin installation fails due to version compatibility](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/handling-errors.html#troubleshooting-custom-plugins) address the steps to take when you encounter the error `PluginValidationFailureReason : The provided plugin could not be loaded`. This error is typically the result of a version mismatch between the plugin and the running OpenSearch instance. | April 21, 2025 | | [New feature: OpenSearch UI compatibility with cross-cluster search](#release-notes) | OpenSearch UI is now compatible with cross-cluster search. This makes it possible for you to use OpenSearch UI in one AWS Region to access clusters in a different Region. This is done by configuring it as a remote cluster connected with a cluster in the same Region. For more information, see [Cross-Region and cross-account data access with cross-cluster search](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application-cross-cluster-search.html). | April 16, 2025 | | [Revised content: "Using OpenSearch UI in Amazon OpenSearch Service"](#release-notes) | We have overhauled and expanded the chapter [Using OpenSearch UI in Amazon OpenSearch Service](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application.html), including expanded procedures, additional setup details, and a new [release history](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/application-release-history.html) of Amazon OpenSearch Service support for OpenSearch UI. | April 15, 2025 | | [Amazon Q Developer for Amazon OpenSearch Service](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support.html) | Amazon Q integration with Amazon OpenSearch Service offers the following generative capabilities: [Generate visualizations using natural language](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-generate-visualizations.html) [View alert summaries and insights](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-alert-summary.html) [View Amazon Q-generated query result summaries on the Discover page](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-query-summary.html) [View recommended anomaly detectors](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-anomaly-detectors.html) [Access Amazon Q chat for OpenSearch-related questions](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/Amazon-Q-developer-support-chat-interface.html) | March 31, 2025 | | [The AmazonOpenSearchServiceRolePolicy managed policy was updated](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html#ac-managed-updates) | The policy enables OpenSearch to update the access scope of any AWS IAM Identity Center application that is only managed by OpenSearch. | March 28, 2025 | | [OR2 and OM2 instances for Amazon OpenSearch Service](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html) | Amazon OpenSearch Service now supports OR2 and OM2 instances. In internal benchmarks, OR2 showed up to 26% better indexing throughput than OR1 and 70% over R7. OM2 showed up to 15% better than OR1 and 66% over M7g. | March 25, 2025 | | [Direct query for CloudWatch Logs and Security Lake](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/direct-query.html) | Amazon OpenSearch Service now supports *direct queries* to query data in CloudWatch Logs and Security Lake. | December 1, 2024 | | [k-NN indexes](#release-notes) | Starting with OpenSearch version 2.17, you can move k-NN indexes to the UltraWarm and cold storage tiers. | November 13, 2024 | | [OpenSearch 2.17 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 2.17. This version includes all features that were part of versions 2.16 and 2.17. For more information, see the [2.16](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.16.0.md) and [2.17](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.17.0.md) release notes. | November 13, 2024 | | [OpenSearch 2.15 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 2.15. This version includes all features that were part of versions 2.14 and 2.15. For more information, see the [2.14](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.14.0.md) and [2.15](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.15.0.md) release notes. | October 11, 2024 | | [New service-linked role](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/slr-osis.html) | Amazon OpenSearch Service adds a service-linked role called `AWSServiceRoleForOpensearchIngestionSelfManagedVpce`, which allows Amazon OpenSearch Ingestion to send metric data to Amazon CloudWatch for pipelines with self-managed VPC endpoints. | June 12, 2024 | | [Direct queries](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/direct-query-s3.html) | Amazon OpenSearch Service now supports running queries directly on data stored in Amazon S3, without needing to ingest the data into an OpenSearch index. | May 22, 2024 | | [OpenSearch 2.13 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 2.13. This version includes all features that were part of versions 2.12 and 2.13. For more information, see the [2.12](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.12.0.md) and [2.13](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.13.0.md) release notes. | May 21, 2024 | | [Amazon OpenSearch Ingestion support for Data Prepper version 2.7](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) | Amazon OpenSearch Ingestion adds support for Data Prepper version 2.7. For more information, see the [2.7 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.7.0). | April 4, 2024 | | [AWS service private access for OpenSearch Serverless collections](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-network.html) | You can now grant specific AWS services, such as Amazon Bedrock, access to your OpenSearch Serverless collections within a network access policy. | March 28, 2024 | | [In-place EBS updates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html) | You can now make some EBS changes to your domains without a blue/green deployment in Amazon OpenSearch Service. | February 14, 2024 | | [Configuration change visibility](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#initiating-tracking-configuration-changes) | You can now track domain configuration changes in the Amazon OpenSearch Service console and using the configuration API. | February 6, 2024 | | [Vector search collections general availability](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-vector-search.html) | Amazon OpenSearch Serverless *vector search* collections are now generally available. The following notable improvements were made during the preview phase: Vector search collections now supports workloads with billion of vectors, each with up to 128 dimensions. OpenSearch Dashboards now supports vector search collections. | November 29, 2023 | | [OR1 instances](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/or1.html) | Amazon OpenSearch Service now supports OR1 instance types. | November 29, 2023 | | [Direct queries with Amazon S3 (preview)](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/direct-query-s3.html) | Direct queries provide a fully managed solution for making transactional data available in Amazon OpenSearch Service within seconds of it being written to an Amazon S3 bucket. | November 29, 2023 | | [10 TiB capacity for time series collections](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-scaling-limits.html) | Amazon OpenSearch Serverless adds support for up to 10 TiB of index data for *time series* collections. This release also supports a maximum allowed capacity of 200 OCUs for all types of collections and the ability to disable standby replicas when you create a collection. | November 29, 2023 | | [OpenSearch 2.11 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 2.11. This version includes all features that were part of versions 2.10 and 2.11. For more information, see the [2.10](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.10.0.md) and [2.11](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.11.0.md) release notes. | November 17, 2023 | | [Amazon OpenSearch Ingestion support for Data Prepper version 2.6](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) | Amazon OpenSearch Ingestion adds support for Data Prepper version 2.6. For more information, see the [2.6 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.6.0). In addition, you can specify Amazon DynamoDB as a pipeline source. For more information, see [Using an OpenSearch Ingestion pipeline with Amazon DynamoDB](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/configure-client-ddb). | November 17, 2023 | | [Amazon OpenSearch Ingestion support for Data Prepper version 2.5](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) | Amazon OpenSearch Ingestion adds support for Data Prepper version 2.5. For more information, see the [2.5 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.5.0). In addition, you can now specify an OpenSearch Service domain or OpenSearch Serverless collection as a pipeline source. For more information, see the [OpenSearch source plugin](https://opensearch.org/docs/latest/data-prepper/pipelines/configuration/sources/opensearch/) in the Data Prepper documentaion. | November 17, 2023 | | [CloudFormation template for remote inference](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cfn-template.html) | To ease the setup of remote inference for semantic search, Amazon OpenSearch Service provides an AWS CloudFormation template in the console that automates the model provisioning process for you. | November 7, 2023 | | [Update to service-linked role policy](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html#AmazonOpenSearchServiceRolePolicy) | Adds the permissions necessary for [the service-linked role](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/slr-aos.html#slr-permissions) policy `AmazonOpenSearchServiceRolePolicy` to assign and unassign IPv6 addresses. The deprecated Elasticsearch policy `AmazonElasticsearchServiceRolePolicy` has also been updated to ensure backwards compatibility. | October 26, 2023 | | [Amazon OpenSearch Serverless lifecycle policies](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-lifecycle.html) | Amazon OpenSearch Serverless introduces index lifecycle policies to streamline the management of data retention and deletion. You can now use APIs or a configuration interface in the console to set data retention polices for *time series* collections, eliminating the need for creating daily indexes or scripts to delete old data. | October 25, 2023 | | [Im4gn instance support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html) | Amazon OpenSearch Service now supports Im4gn instance types. Im4gn instances are optimized for workloads that manage large datasets and need high storage density per vCPU. | October 20, 2023 | | [Administrative options](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/admin-options.html) | Amazon OpenSearch Service now offers several administrative options that provide granular control if you need to troubleshoot issues with your domain. These options include the ability to restart the OpenSearch process on a data node and the ability to restart a data node. | October 17, 2023 | | [Optional plugins](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-plugins.html) | Amazon OpenSearch Service adds support for four new language analyzer plugins: Nori (Korean), Sudachi (Japanese), Pinyin (Chinese), and STConvert Analysis (Chinese), as well as the Amazon Personalize Search Ranking plugin. | October 16, 2023 | | [OpenSearch 2.9 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 2.9. This version includes all features that were part of versions 2.8 and 2.9. For more information, see the [2.8](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.8.0.md) and [2.9](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.9.0.md) release notes. | October 2, 2023 | | [ML connectors](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ml-amazon-connector.html) | Amazon OpenSearch Service adds support for machine learning (ML) connectors. Connectors facilitate access to ML models hosted on other AWS services, or on third-party machine learning (ML) platforms. | September 6, 2023 | | [Amazon OpenSearch Ingestion adds support for Data Prepper version 2.4](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) | Amazon OpenSearch Ingestion adds support for Data Prepper version 2.4. For more information, see the [2.4 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.4.0). In addition, you can now specify Amazon Managed Streaming for Apache Kafka (Amazon MSK) as a pipeline source. | August 31, 2023 | | [6 TiB capacity for time series collections](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-scaling-limits.html) | Amazon OpenSearch Serverless adds support for up to 6 TiB of index data for *time series* collections. This release also supports a maximum allowed capacity of 100 OCUs for both *search* and *time series* collections. | August 15, 2023 | | [Vector search collections](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-vector-search.html) | Amazon OpenSearch Serverless adds the option to create a *vector search* collection, which you can use to store vector embeddings to power similiarity and semantic searches. | July 26, 2023 | | [OpenSearch 2.7 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 2.7. This version includes all features that were part of versions 2.6 and 2.7. For more information, see the [2.6](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.6.0.md) and [2.7](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.7.0.md) release notes. | July 10, 2023 | | [Data Prepper 2.3 support](https://docs.aws.amazon.com/opensearch-service/latest/ingestion/ingestion.html#ingestion-supported-versions) | Amazon OpenSearch Ingestion adds support Data Prepper version 2.3. For more information, see the [2.3 release notes](https://github.com/opensearch-project/data-prepper/releases/tag/2.3.0). In addition, you can now specify Amazon Security Lake as a pipeline source. | June 26, 2023 | | [Multi-AZ with Standby](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-multiaz.html#managedomains-za-standby.html) | Amazon OpenSearch Service adds the option to deploy a domain across three Availability Zones (AZs), with each AZ containing a complete copy of data and with nodes in one of these AZs acting as a standby. The Multi-AZ with Standby deployment option provides 99.99% availability and consistent performance in the event of an infrastructure failure. | May 3, 2023 | | [New service-linked role](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/slr-osis.html) | Amazon OpenSearch Service adds a service-linked role called `AWSServiceRoleForAmazonOpenSearchIngestionService`, which allows Amazon OpenSearch Ingestion to send metric data to Amazon CloudWatch. | April 26, 2023 | | [Amazon OpenSearch Ingestion](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ingestion.html) | Amazon OpenSearch Ingestion is a fully managed data collector that delivers real-time log and trace data to OpenSearch Service domains and OpenSearch Serverless collections. OpenSearch Ingestion eliminates the need for you to use third-party solutions like Logstash or Jaeger to ingest data into your domains and collections. | April 26, 2023 | | [OpenSearch 2.5 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 2.5. This version includes all features that were part of versions 2.4 and 2.5. For more information, see the [2.4](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.4.0.md) and [2.5](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.5.0.md) release notes. | March 13, 2023 | | [Off-peak maintenance windows](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/off-peak.html) | Amazon OpenSearch Service adds off-peak windows, which are daily 10-hour, low-traffic time blocks during which it can schedule service software updates and Auto-Tune optimizations that require a blue/green deployment. Off-peak updates help to minimize strain on a cluster's dedicated master nodes during higher traffic periods.For new domains created after February 16, the off-peak window is automatically configured for between 10:00 P.M. and 8:00 A.M. local time. For existing domains, you need to explicitly enable the window. | February 16, 2023 | | [Configure SAML authentication during domain creation](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/saml.html#saml-configure-new) | Amazon OpenSearch Service now supports configuring SAML authentication during domain creation. Previously, you had to configure SAML options after the domain was already created. | February 1, 2023 | | [Remote reindex for VPC domains](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/remote-reindex.html#remote-reindex-vpc) | Amazon OpenSearch Service adds the option for a VPC endpoint connection between two domains. You can now use remote reindex to copy indexes from one VPC domain to another without a reverse proxy. Your VPC domains must be running service software R20221114 or later to use this feature. | January 31, 2023 | | [Amazon OpenSearch Serverless general availability](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless.html) | Amazon OpenSearch Serverless is now generally available. The following notable improvements were made during the preview phase: Capacity can now scale *down* to the minimum configured OCUs when there's a decrease in traffic on the collection endpoint. The maximum allowed OCUs for both indexing and search was increased from 20 to 50. Each OCU includes enough hot ephemeral storage for 120 GiB of index data. You can now configure data access settings while creating collections, rather than having to configure them in a separate workflow. | January 25, 2023 | | [Async dry run](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#dryrun) | Amazon OpenSearch Service now supports async dry run, which allows you to perform a validation check prior to making a configuration change, and notifies you if your changes will cause a blue/green deployment. | January 19, 2023 | | [New service-linked role](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless-service-linked-roles.html) | Amazon OpenSearch Service adds a service-linked role called `AWSServiceRoleForAmazonOpenSearchServerless`, which allows OpenSearch Serverless to send metric data to Amazon CloudWatch. | November 29, 2022 | | [Amazon OpenSearch Serverless preview](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/serverless.html) | Amazon OpenSearch Serverless is an on-demand, auto scaling, serverless configuration for Amazon OpenSearch Service. Serverless removes the operational complexities of provisioning, configuring, and tuning your OpenSearch clusters. | November 29, 2022 | | [OpenSearch 2.3 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 2.3. This version includes all features that were part versions 2.0, 2.1, and 2.2. For more information, see the [2.0](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.0.0.md), [2.1](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.1.0.md), [2.2](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.2.0.md), and [2.3](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-2.3.0.md) release notes. Version 2.3 contains a **breaking change**. For more information, see [Supported upgrade paths](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html#supported-upgrade-paths). | November 15, 2022 | | [Notifications plugin support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/alerting.html#alerting-notifications) | Amazon OpenSearch Service now supports the Notifications plugin, which offers a central location for all of your notifications from OpenSearch plugins. Starting with version 2.0, alerting destinations were deprecated and replaced with notification *channels*. | November 15, 2022 | | [Kibana 7.1.1 support](https://www.elastic.co/guide/en/kibana/7.1/release-notes-7.1.1.html) | Amazon OpenSearch Service domains running Elasticsearch 7.1 now support the latest patch release for Kibana 7.1.1, which adds bug fixes and improves security. When you update your 7.1 domains to service software R20221114, OpenSearch Service will automatically upgrade them to this patch release. | November 15, 2022 | | [Kibana 6.8.13 support](https://www.elastic.co/guide/en/kibana/6.8/release-notes-6.8.13.html) | Amazon OpenSearch Service domains running Elasticsearch 6.8 now support the latest patch release for Kibana 6.8.13, which adds bug fixes and improves security. When you update your 6.8 domains to service software R20221114, OpenSearch Service will automatically upgrade them to this patch release. | November 15, 2022 | | [Kibana 6.3.2 support](https://www.elastic.co/guide/en/kibana/6.3/release-notes-6.3.2.html) | Amazon OpenSearch Service domains running Elasticsearch 6.3 now support the latest patch release for Kibana 6.3.2, which adds bug fixes and improves security. When you update your 6.3 domains to service software R20221114, OpenSearch Service will automatically upgrade them to this patch release. | November 15, 2022 | | [AWS PrivateLink](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/vpc-interface-endpoints.html) | With Amazon OpenSearch Service-managed VPC endpoints, you can connect directly to OpenSearch Service VPC domains by using an interface VPC endpoint instead of connecting over the internet. An OpenSearch Service-managed VPC endpoint is accessible only within the VPC where the endpoint is provisioned, or from any VPCs peered with the VPC where the endpoint is provisioned, as permitted by the route tables and security groups. Your VPC domain must be running service software R20220928 or later to connect to an interface VPC endpoint. | November 7, 2022 | | [Bug fixes and performance improvements](#release-notes) | Service software R20220928 includes bug fixes and performance enhancements, including improved SAML logging. The update also changes the default tenant to `Global` rather than `Private`. | October 3, 2022 | | [Improved API reference](https://docs.aws.amazon.com/opensearch-service/latest/APIReference/Welcome.html) | Amazon OpenSearch Service offers an improved, all-encompassing configuration API reference. The new references contains all available actions and data types, sample request and response syntax, and links to the corresponding SDK references for all supported languages. | September 13, 2022 | | [Blue/green validation](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#validation) | Amazon OpenSearch Service now performs a validation check prior to blue/green deployments, and surfaces validation errors if your domain is not eligible for an update. | August 16, 2022 | | [OpenSearch 1.3 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 1.3. For more information, see the [1.3 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-1.3.0.md). | July 27, 2022 | | [ML Commons plugin support](https://opensearch.org/docs/latest/ml-commons-plugin/index/) | Amazon OpenSearch Service adds support for the ML Commons plugin, which provides a set of common machine learning algorithms through transport and [REST API calls](https://opensearch.org/docs/latest/ml-commons-plugin/api). You can also interact with the ML Commons plugin through PPL commands. | July 27, 2022 | | [gp3 volume support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html#ebsresource) | Amazon OpenSearch Service adds support for the `gp3` EBS General Purpose SSD volume type. You can specify additional provisioned IOPS and throughput when you create or modify the domain. | July 26, 2022 | | [Enhanced best practices documentation](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/bp.html) | The Amazon OpenSearch Service documentation provides improved operational best practices and general recommendations for creating and operating OpenSearch Service domains. | July 6, 2022 | | [Integration with Service Quotas](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html) | You can now view quotas for Amazon OpenSearch Service, and request quota increases, from the Service Quotas console. | June 29, 2022 | | [Tag-based access control for the OpenSearch API](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac.html#ac-types-identity) | You can now use tags to control access to the OpenSearch APIs. Previously, you could only use tags to control access to the configuration API. | June 16, 2022 | | [Cross-cluster search across Regions](#release-notes) | Cross-cluster search is now supported across AWS Regions as long as both domains are running Elasticsearch version 7.10 or later, or any version of OpenSearch. | June 14, 2022 | | [Single Kibana 5.6 support](https://www.elastic.co/guide/en/kibana/5.6/release-notes-5.6.16.html) | Amazon OpenSearch Service adds support for single Kibana 5.6.16. With single Kibana 5.6.16, you can use Kibana 5.6 as your front end while connecting to Elasticsearch versions 5.1, 5.3, 5.5, and 5.6. You must be on service software R20220323 or later to use single Kibana 5.6. | April 4, 2022 | | [R20220323-P1](#release-notes) | Amazon OpenSearch Service recently released service software update R20220323, but the update was subsequently rolled back because of an issue. We recommend that you update your domains to patch release R20220323-P1 or later, which fixes the issue. | April 4, 2022 | | [OpenSearch 1.2 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 1.2. For more information, see the [1.2 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-1.2.0.md). | April 4, 2022 | | [Observability](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/observability.html) | The default installation of OpenSearch Dashboards for Amazon OpenSearch Service includes the Observability plugin, which you can use to visualize data-driven events using Piped Processing Language (PPL) to explore and query your data. The plugin requires OpenSearch 1.2 or later and service software R20220323 or later. | April 4, 2022 | | [Kibana 7.7.1 support](https://www.elastic.co/guide/en/kibana/7.7/release-notes-7.7.1.html) | Amazon OpenSearch Service domains running Elasticsearch 7.7 now support the latest patch release for Kibana 7.7, which adds bug fixes and improves security. When you update your 7.7 domains to service software R20220323 or later, OpenSearch Service will automatically upgrade them to this patch release. | April 4, 2022 | | [JVM memory pressure metric changes](https://aws.amazon.com//blogs/big-data/understanding-the-jvmmemorypressure-metric-changes-in-amazon-opensearch-service/) | Amazon OpenSearch Service changed the logic for the `JVMMemoryPressure` CloudWatch metrics to more accurately reflect memory utilization. Previously, the metrics only considered the old generation memory pool of JVM heap. With this change, the metric also considers the young generation memory pool. After you update your domain to service software R20220323, you might see an increase in the `JVMMemoryPressure`, `MasterJVMMemoryPressure`, and/or `WarmJVMMemoryPressure` metrics. | April 4, 2022 | | [Custom dictionaries with the IK (Chinese) Analysis plugin](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-packages.html#custom-packages-using) | Amazon OpenSearch Service now supports using custom dictionaries with the IK (Chinese) Analysis plugin. | April 4, 2022 | | [Cross-cluster replication on existing domains](#release-notes) | Amazon OpenSearch Service removed the limitation that you can only implement cross-cluster search and cross-cluster replication on domains created on or after June 3rd, 2020. You can now enable these features on all domains regardless of when they were created. Both domains must be on service software R20220323 or later. | April 4, 2022 | | [Blue/green deployment visibility](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-configuration-changes.html#managedomains-config-stages) | Amazon OpenSearch Service now offers more visibility into the progress of blue/green deployments. You can monitor these details in the console or using the configuration API. | January 27, 2022 | | [Fine-grained access control on existing domains](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/fgac.html#fgac-enabling) | You can now enable fine-grained access control on existing domains. You can enable a temporary migration period for open/IP-based access policies to ensure that users can continue to access your domain while you create and map roles. Enabling fine-grained access control on existing domains requires service software R20211203 or later. | January 6, 2022 | | [Renamed OpenSearch Dashboards roles](https://opensearch.org/docs/latest/security-plugin/access-control/users-roles/#predefined-roles) | With service software R20211203, the `kibana_user` role was renamed to `opensearch_dashboards_user`, and `kibana_read_only` was renamed to `opensearch_dashboards_read_only`. This change applies to all *newly-created* OpenSearch 1.*x* domains. For existing OpenSearch domains that you upgrade to service software R20211203, the roles remain the same. | January 4, 2022 | | [OpenSearch 1.1 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports OpenSearch version 1.1. For more information, see the [1.1 release notes](https://github.com/opensearch-project/opensearch-build/blob/main/release-notes/opensearch-release-notes-1.1.0.md). | January 4, 2022 | | [ISM visual editor](https://opensearch.org/docs/latest/im-plugin/ism/index/#visual-editor) | The default installation of OpenSearch Dashboards for Amazon OpenSearch Service now supports the visual editor for ISM policies. This feature requires OpenSearch 1.1 or later. | January 4, 2022 | | [Cross-service confused deputy prevention update](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cross-service-confused-deputy-prevention.html) | Amazon OpenSearch Service supports using the `aws:SourceArn` and `aws:SourceAccount` global condition context keys in IAM resource policies to prevent the confused deputy problem. You must be on service software R20211203 or later to use these condition keys. | January 4, 2022 | | [Log4j patch](#release-notes) | Service software R20211203-P2 updates the version of Log4j used in OpenSearch Service as recommended by the advisories in [CVE-2021-44228](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44228) and [CVE-2021-45046](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-45046). The patch applies to domains running all versions of OpenSearch and Elasticsearch. OpenSearch Service will continue to update various Log4j versions internally, and they will not necessarily be restricted to the latest version of Log4j. The Log4j version on your domain depends on the software version that the domain is running. However, irrespective of the Log4j version, as long as you're running R20211203-P2 or later, your domains contain the Log4j update required to address CVE-2021-44228 and CVE-2021-45046. | December 15, 2021 | | [Cross-cluster replication](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/replication.html) | Cross-cluster replication lets you replicate indices, mappings, and metadata from one OpenSearch Service domain to another. Cross-cluster replication requires a domain running Elasticsearch 7.10 or OpenSearch 1.1 or later. | October 5, 2021 | | [New AWS-managed policies](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac-managed.html) | The launch of Amazon OpenSearch Service includes new AWS-managed policies and the deprecation of old policies. | September 8, 2021 | | [Kibana 6.4.3 support](https://www.elastic.co/guide/en/kibana/6.4/release-notes-6.4.3.html) | Amazon OpenSearch Service domains running legacy Elasticsearch version 6.4 now support the latest patch release for Kibana 6.4, which adds bug fixes and improves security. OpenSearch Service will automatically upgrade domains to this patch release. | September 8, 2021 | | [Data streams](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/data-streams.html) | Amazon OpenSearch Service adds support for data streams, which simplify the process of managing time-series data. Your domain must be running OpenSearch 1.0 or later to use data streams. | September 8, 2021 | | [Amazon OpenSearch Service](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/rename.html) | AWS renames Amazon OpenSearch Service to remove the legacy "Elasticsearch" branding. Amazon OpenSearch Service supports OpenSearch and legacy Elasticsearch OSS. When you create a cluster, you have the option of which search engine to use. OpenSearch Service offers broad compatibility with Elasticsearch OSS 7.10, the final open source version of the software. | September 8, 2021 | | [Cold storage](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cold-storage.html) | Cold storage is a new storage tier for infrequently accessed or historical data. Cold indices only occupy S3 storage and have no compute attached to them. Cold storage requires a domain running Elasticsearch 7.9 or later and service software R20210426 or later. | May 13, 2021 | | [ARM-based Graviton instances](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html) | Amazon OpenSearch Service now supports ARM-based Graviton instance types (M6G, C6G, R6G, and R6GD). Graviton instance types are available on new and existing domains running Elasticsearch 7.9 or later and service software R20210331 or later. | May 4, 2021 | | [ISM templates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ism.html#ism-template.html) | Amazon OpenSearch Service adds support for ISM templates, which let you automatically attach an ISM policy to an index if the index matches a pattern defined in the policy. ISM templates require service software R20210426 or later. This update also deprecates the `policy_id` setting, meaning you can no longer use index templates to apply ISM policies to newly created indices. The update introduces a breaking change for existing CloudFormation templates using this setting. | April 27, 2021 | | [Elasticsearch 7.10 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports Elasticsearch version 7.10. For more information, see [7.10 release notes](https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.10.0.html). | April 21, 2021 | | [Asynchronous search](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/asynchronous-search.html) | Amazon OpenSearch Service now supports asynchronous search, which lets you run search requests in the background. Asynchronous search requires a domain running Elasticsearch 7.10 or later and service software R20210331 or later. | April 21, 2021 | | [Tag-based access control for the configuration API](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ac.html) | You can now use AWS tags to control access to the Amazon ES configuration API. | March 2, 2021 | | [Auto-Tune](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/auto-tune.html) | Amazon OpenSearch Service adds Auto-Tune, which uses performance and usage metrics from your cluster to suggest changes to the JVM settings on your nodes. Auto-Tune requires a domain running Elasticsearch 6.7 or later and service software R20201117 or later. | February 24, 2021 | | [Trace Analytics](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/trace-analytics.html) | The default installation of Kibana for Amazon OpenSearch Service now includes the trace analytics plugin, which lets you monitor trace data from your distributed applications. The plugin requires a domain running Elasticsearch 7.9 or later and service software R20210201 or later. | February 17, 2021 | | [Shard metrics](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-cloudwatchmetrics.html#managedomains-cloudwatchmetrics-cluster-metrics) | Amazon OpenSearch Service adds the following CloudWatch metrics for tracking shard status: `Shards.active`, `Shards.unassigned`, `Shards.delayedUnassigned``Shards.activePrimary`, `Shards.initializing`, `Shards.relocating`. The metrics are available on domains running service software R20210201 or later. | February 17, 2021 | | [Kibana reports](https://opensearch.org/docs/latest/dashboards/reporting/) | The default installation of Kibana for Amazon OpenSearch Service now supports on-demand reports for the Discover, Visualize, and Dashboard pages. This feature requires Elasticsearch 7.9 or later and service software R20210201 or later. | February 17, 2021 | | [Kibana 5.6.16 support](#release-notes) | Amazon OpenSearch Service domains running Elasticsearch 5.6 now support the latest patch release for Kibana 5.6, which adds bug fixes and improves security. Amazon ES will automatically upgrade domains to this patch release. | February 17, 2021 | | [Encryption for existing domains](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/trace-analytics.html) | Amazon OpenSearch Service now supports enabling encryption of data at rest and node-to-node encryption on existing domains running Elasticsearch 6.7 or later. After you enable these settings, you can't disable them. | January 27, 2021 | | [Remote reindex](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/remote-reindex.html) | Amazon OpenSearch Service now supports remote reindex, which lets you migrate indices from remote domains. This feature requires service software R20201117 or later. | November 24, 2020 | | [Piped Processing Language](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ppl-support.html) | Amazon OpenSearch Service now supports Piped Processing Language (PPL), a query language that lets you use pipe (\$1) syntax to query data stored in Elasticsearch. This feature requires service software R20201117 or later. To learn more, see . | November 24, 2020 | | [Kibana notebooks](#release-notes) | Amazon OpenSearch Service adds support for Kibana notebooks, which lets you combine live visualizations and narrative text in a single interface. This feature requires service software R20201117 or later. | November 24, 2020 | | [Gantt charts](#release-notes) | The default installation of Kibana for Amazon OpenSearch Service now supports a new visualization type, Gantt charts. This feature requires service software R20201117 or later. | November 24, 2020 | | [Elasticsearch 7.9 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports Elasticsearch version 7.9. For more information, see [7.9 release notes](https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.9.0.html). | November 24, 2020 | | [Anomaly detection updates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ad.html) | Anomaly detection for Amazon OpenSearch Service adds support for high cardinality, which lets you categorize anomalies with a dimension like IP address, product ID, country code, and so on. This feature requires service software R20201117 or later. | November 24, 2020 | | [Dynamic dictionary updates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-packages.html) | Amazon OpenSearch Service now lets you update your search analyzers without reindexing. You can update the dictionary files on some or all of your domains, and Amazon ES tracks package versions over time so that you have a history of what changed and when. This feature requires service software R20201019 or later. | November 17, 2020 | | [Custom endpoints](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/customendpoint.html) | Amazon OpenSearch Service now supports custom endpoints, which let you give your Amazon ES domain a new URL. If you ever swap domains, you can maintain the same URL. This feature requires service software R20201019 or later. | November 5, 2020 | | [New language plugins](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-plugins.html) | Amazon OpenSearch Service now supports IK (Chinese) Analysis, Vietnamese Analysis, and Thai Analysis plugins on domains running Elasticsearch 7.7 or later with service software R20201019 or later. | October 28, 2020 | | [Elasticsearch 7.8 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports Elasticsearch version 7.8. For more information, see [7.8 release notes](https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.8.0.html). | October 28, 2020 | | [SAML authentication for Kibana](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/saml.html) | Amazon OpenSearch Service now supports SAML authentication for Kibana, which lets you use third-party identity providers to log in to Kibana, manage fine-grained access control, search your data, and build visualizations. This feature requires service software R20201019 or later. | October 27, 2020 | | [T3 instances](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/bp.html) | Amazon OpenSearch Service now supports the `t3.small` and `t3.medium` instance types. | September 23, 2020 | | [Audit logs](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/audit-logs.html) | Amazon OpenSearch Service now supports audit logs for your data, which lets you track failed login attempts, user access to indices, documents, and fields, and much more. This feature requires service software R20200910 or later. | September 16, 2020 | | [UltraWarm updates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html) | UltraWarm for Amazon OpenSearch Service adds new metrics, new settings, a larger migration queue, and a cancellation API. These updates require service software R20200910 or later. For more information, see . | September 14, 2020 | | [Learning to Rank](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/learning-to-rank.html) | Amazon OpenSearch Service now supports the open source Learning to Rank plugin, which lets you use machine learning technologies to improve search relevance. This feature requires service software R20200721 or later. | July 27, 2020 | | [k-NN cosine similarity](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/knn.html) | k-Nearest Neighbor (k-NN) now lets you search for "nearest neighbors" by cosine similarity in addition to Euclidean distance. This feature requires service software R20200721 or later. | July 23, 2020 | | [gzip compression](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/gzip.html) | Amazon OpenSearch Service now supports gzip compression for most HTTP requests and responses, which can reduce latency and conserve bandwidth. This feature requires service software R20200721 or later. | July 23, 2020 | | [Elasticsearch 7.7 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports Elasticsearch version 7.7. For more information, see [7.7 release notes](https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.7.0.html). | July 23, 2020 | | [Kibana map service](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/dashboards.html#dashboards-map-server) | The default installation of Kibana for Amazon OpenSearch Service now includes a WMS map server, except for domains in the India and China Regions. | June 18, 2020 | | [SQL improvements](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/sql-support.html) | SQL support for Amazon OpenSearch Service now supports many new operations, a dedicated Kibana user interface for data exploration, and an interactive CLI. | June 3, 2020 | | [Cross-cluster search](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/cross-cluster-search.html) | Amazon OpenSearch Service lets you perform cross-cluster queries and aggregations across multiple connected domains. | June 3, 2020 | | [Anomaly detection](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ad.html) | Amazon OpenSearch Service lets you automatically detect anomalies in near-real time. | June 3, 2020 | | [UltraWarm](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html) | UltraWarm storage for Amazon OpenSearch Service has left public preview and is now generally available. The feature now supports a wider range of versions and AWS Regions. For more information, see . | May 5, 2020 | | [Custom dictionaries](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/custom-packages.html) | Amazon OpenSearch Service lets you upload custom dictionary files for use with your cluster. These files improve your search results by telling Elasticsearch to ignore certain high-frequency words or to treat terms as equivalent. | April 21, 2020 | | [Elasticsearch 7.4 Support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports Elasticsearch version 7.4. For more information, see [Supported versions](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version). | March 12, 2020 | | [k-NN](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/knn.html) | Amazon OpenSearch Service adds support for k-Nearest Neighbor (k-NN) search. k-NN requires service software R20200302 or later. | March 3, 2020 | | [Index State Management](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ism.html) | Amazon OpenSearch Service adds Index State Management (ISM), which lets you automate routine tasks, such as deleting indices when they reach a certain age. This feature requires service software R20200302 or later. | March 3, 2020 | | [Elasticsearch 5.6.16 support](#release-notes) | Amazon OpenSearch Service now supports the latest patch release for version 5.6, which adds bug fixes and improves security. Amazon ES will automatically upgrade existing 5.6 domains to this release. Note that this Elasticsearch release incorrectly reports its version as 5.6.17. | March 2, 2020 | | [Fine-grained access control](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/fgac.html) | Amazon OpenSearch Service now supports fine-grained access control, which offers security at the index, document, and field level, Kibana multi-tenancy, and optional HTTP basic authentication for your cluster. | February 11, 2020 | | [UltraWarm storage (preview)](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ultrawarm.html) | Amazon OpenSearch Service adds UltraWarm, a new warm storage tier that uses Amazon S3 and a sophisticated caching solution to improve performance. For indices that you are not actively writing to and query less frequently, UltraWarm storage offers significantly lower costs per GiB. | December 3, 2019 | | [Encryption features for China Regions](#release-notes) | Encryption of data at rest and node-to-node encryption are now available in the `cn-north-1` China (Beijing) Region and `cn-northwest-1` China (Ningxia) Region. | November 20, 2019 | | [Require HTTPS](#release-notes) | You can now require that all traffic to your Amazon ES domains arrive over HTTPS. When configuring your domain, check the **Require HTTPS** box. This feature requires service software R20190808 or later. | October 3, 2019 | | [Elasticsearch 7.1 and 6.8 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports Elasticsearch version 7.1 and 6.8. For more information, see [Supported versions](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version). | August 13, 2019 | | [Hourly snapshots](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-snapshots.html) | Rather than daily snapshots, Amazon OpenSearch Service now takes hourly snapshots of domains running Elasticsearch 5.3 and later so that you have more frequent backups from which to restore your data. | July 8, 2019 | | [Elasticsearch 6.7 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports Elasticsearch version 6.7. For more information, see [Supported versions](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version). | May 29, 2019 | | [SQL support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/sql-support.html) | Amazon OpenSearch Service now lets you query your data using SQL. SQL support requires service software R20190418 or later. | May 15, 2019 | | [5-series instance types](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/supported-instance-types.html) | Amazon OpenSearch Service now supports M5, C5, and R5 instance types. Compared to previous-generation instance types, these new types offer better performance at lower prices. For more information, see [Limits](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/limits.html). | April 24, 2019 | | [Elasticsearch 6.5 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version) | Amazon OpenSearch Service now supports Elasticsearch version 6.5. | April 8, 2019 | | [Alerting](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/alerting.html) | Alerting for Amazon OpenSearch Service notifies you when data from one or more Amazon ES indices meets certain conditions. Alerting requires service software R20190221 or later. | March 25, 2019 | | [Three Availability Zone support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-multiaz.html) | Amazon OpenSearch Service now supports three Availability Zones in many Regions. This release also includes a streamlined console experience. This multi-AZ requires service software R20181023 or later. | February 7, 2019 | | [Elasticsearch 6.4 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version) | Amazon OpenSearch Service now supports Elasticsearch version 6.4. | January 23, 2019 | | [200-node clusters](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/petabyte-scale.html) | Amazon ES now lets you create clusters with up to 200 data nodes for a total of 3 PB of storage. | January 22, 2019 | | [Service software updates](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/service-software.html) | Amazon ES now lets you manually update the service software for your domain in order to benefit from new features more quickly or update at a low traffic time. To learn more, see . | November 20, 2018 | | [New CloudWatch metrics](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/managedomains-cloudwatchmetrics.html) | Amazon ES now offers node-level metrics and new **Cluster health** and **Instance health** tabs in the Amazon ES console. | November 20, 2018 | | [China (Beijing) support](#release-notes) | Amazon OpenSearch Service is now available in the cn-north-1 Region, where it supports the M4, C4, and R4 instance types. | October 17, 2018 | | [Node-to-node encryption](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ntn.html) | Amazon OpenSearch Service now supports node-to-node encryption, which keeps your data encrypted as Amazon ES distributes it throughout your cluster. | September 18, 2018 | | [In-place version upgrades](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/version-migration.html) | Amazon OpenSearch Service now supports in-place version upgrades. | August 14, 2018 | | [Elasticsearch 6.3 and 5.6 support](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/what-is.html#choosing-version) | Amazon OpenSearch Service now supports Elasticsearch version 6.3 and 5.6. | August 14, 2018 | | [Error logs](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/createdomain-configure-slow-logs.html) | Amazon ES now lets you publish Elasticsearch error logs to Amazon CloudWatch. | July 31, 2018 | | [China (Ningxia) Reserved Instances](#release-notes) | Amazon ES now offers Reserved Instances in the China (Ningxia) Region. | May 29, 2018 | | [Reserved Instances](https://docs.aws.amazon.com/opensearch-service/latest/developerguide/ri.html) | Amazon ES now offers support for Reserved Instances. | May 7, 2018 | ## Earlier updates The following table describes important changes Amazon ES before May 2018. | Change | Description | Date | | --- | --- | --- | | Amazon Cognito Authentication for Kibana | Amazon ES now offers login page protection for Kibana. To learn more, see [Configuring Amazon Cognito authentication for OpenSearch Dashboards](cognito-auth.md). | April 2, 2018 | | Elasticsearch 6.2 Support | Amazon OpenSearch Service now supports Elasticsearch version 6.2. | March 14, 2018 | | Korean Analysis Plugin | Amazon ES now supports a memory-optimized version of the [Seunjeon](https://bitbucket.org/eunjeon/seunjeon/src/master/elasticsearch/) Korean analysis plugin. | March 13, 2018 | | Instant Access Control Updates | Changes to the access control policies on Amazon ES domains now take effect instantly. | March 7, 2018 | | Petabyte Scale | Amazon ES now supports I3 instance types and total domain storage of up to 1.5 PB. To learn more, see [Petabyte scale in Amazon OpenSearch Service](petabyte-scale.md). | 19 December 2017 | | Encryption of Data at Rest | Amazon ES now supports encryption of data at rest. To learn more, see [Encryption of data at rest for Amazon OpenSearch Service](encryption-at-rest.md). | December 7, 2017 | | Elasticsearch 6.0 Support | Amazon ES now supports Elasticsearch version 6.0. For migration considerations and instructions, see [Upgrading Amazon OpenSearch Service domains](version-migration.md). | December 6, 2017 | | VPC Support | Amazon ES now lets you launch domains within an Amazon Virtual Private Cloud. VPC support provides an additional layer of security and simplifies communications between Amazon ES and other services within a VPC. To learn more, see [Launching your Amazon OpenSearch Service domains within a VPC](vpc.md). | October 17, 2017 | | Slow Logs Publishing | Amazon ES now supports the publishing of slow logs to CloudWatch Logs. To learn more, see [Monitoring OpenSearch logs with Amazon CloudWatch Logs](createdomain-configure-slow-logs.md). | October 16, 2017 | | Elasticsearch 5.5 Support | Amazon ES now supports Elasticsearch version 5.5. You can now restore automated snapshots without contacting Support and store scripts using the `_scripts` API. | September 7, 2017 | | Elasticsearch 5.3 Support | Amazon ES added support for Elasticsearch version 5.3. | June 1, 2017 | | More Instances and EBS Capacity per Cluster | Amazon ES now supports up to 100 nodes and 150 TB EBS capacity per cluster. | April 5, 2017 | | Canada (Central) and EU (London) Support | Amazon ES added support for the following Regions: Canada (Central), ca-central-1, and EU (London), eu-west-2. | March 20, 2017 | | More Instances and Larger EBS Volumes | Amazon ES added support for more instances and larger EBS volumes. | February 21, 2017 | | Elasticsearch 5.1 Support | Amazon ES added support for Elasticsearch version 5.1. | January 30, 2017 | | Support for the Phonetic Analysis Plugin | Amazon ES now provides built-in integration with the Phonetic Analysis plugin, which allows you to run “sounds-like” queries on your data. | December 22, 2016 | | US East (Ohio) Support | Amazon ES added support for the following Region: US East (Ohio), us-east-2. | October 17, 2016 | | New Performance Metric | Amazon ES added a performance metric, ClusterUsedSpace. | July 29, 2016 | | Elasticsearch 2.3 Support | Amazon ES added support for Elasticsearch version 2.3. | July 27, 2016 | | Asia Pacific (Mumbai) Support | Amazon ES added support for the following Region: Asia Pacific (Mumbai), ap-south-1. | June 27, 2016 | | More Instances per Cluster | Amazon ES increased the maximum number of instances (instance count) per cluster from 10 to 20. | May 18, 2016 | | Asia Pacific (Seoul) Support | Amazon ES added support for the following Region: Asia Pacific (Seoul), ap-northeast-2. | January 28, 2016 | | Amazon ES | Initial release. | October 1, 2015 |