# Use AWS IoT Greengrass stream manager in AWS IoT SiteWise
Use AWS IoT Greengrass stream manager

AWS IoT Greengrass stream manager is an integration feature that facilitates the transfer of data streams from local sources to the AWS Cloud. It acts as an intermediary layer that manages data flows, enabling devices operating at the edge to gather and store data before it is sent to AWS IoT SiteWise, for further analysis and processing.

Add a data destination by configuring a local source on the AWS IoT SiteWise console. You can also use stream manager in your custom AWS IoT Greengrass solution to ingest data to AWS IoT SiteWise.

**Note**  
To ingest data from OPC UA sources, configure an AWS IoT SiteWise Edge gateway that runs on AWS IoT Greengrass. For more information, see [Use AWS IoT SiteWise Edge gateways](gateways.md).

For more information about how to **configure a destination** for local source data, see [Understand AWS IoT SiteWise Edge destinations](gw-destinations.md#source-destination).

For more information about how to **ingest data using stream manager** in a custom AWS IoT Greengrass solution, see the following topics in the *AWS IoT Greengrass Version 2 Developer Guide*:
+ [What is AWS IoT Greengrass?](https://docs.aws.amazon.com/greengrass/v2/developerguide/)
+ [Manage data streams on the AWS IoT Greengrass core](https://docs.aws.amazon.com/greengrass/v2/developerguide/manage-data-streams.html)
+ [Exporting data to AWS IoT SiteWise asset properties](https://docs.aws.amazon.com/greengrass/v2/developerguide/stream-export-configurations.html#export-to-iot-sitewise)