# Evaluate if you can downgrade your Microsoft SQL Server edition
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If you find that you aren't using Enterprise edition features, you can consider downgrading to Microsoft SQL Server Standard or Developer edition. By downgrading the edition, you can save on licensing costs.

**Note**  
SQL Server Developer edition is only eligible for use in non-production, development, and test workloads.

## Downgrade requirements
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Your Microsoft SQL Server on Amazon EC2 must use the Bring Your Own License model (BYOL) and SQL Server Enterprise edition to be eligible for an in-place downgrade. If your instance meets this criteria, you should carefully evaluate which features are being used on your SQL Server instance before performing any changes. You can review the following SQL Server Enterprise edition features and instance level constraints to help evaluate your downgrade eligibility.

**Tip**  
A script is available to help evaluate if you can downgrade your SQL Server edition. For more information, see [Downgrade SQL Server Enterprise edition using AWS Systems Manager Document to reduce cost](https://aws.amazon.com/blogs/mt/downgrade-sql-server-enterprise-edition-using-aws-systems-manager-document-to-reduce-cost/).

Confirm that your instance has **less** than the following resources available:
+ 48 vCPUs
+ 128 GiB of memory

If your instance is under-utilized for your workload, you can change the instance type or size your instance to meet these requirements. For more information, see [Change the instance type ](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-resize.html).

Confirm that you aren't using any of the following SQL Server Enterprise edition features:
+ Database-level enterprise features
+ Always On availability groups
+ Online index operations
+ Resource Governor
+ Peer-to-peer or Oracle replication
+ R or Python extensions
+ Memory-optimized tempdb metadata

The following diagram walks through an evaluation for some of the downgrade requirements:

![A diagram evaluating some of the downgrade eligibility requirements.](http://docs.aws.amazon.com/sql-server-ec2/latest/userguide/images/sql_edition_downgrade_decision_flow.png)


If your workload doesn't utilize any of the previously listed features, you should continue to evaluate if you use any less common SQL Server Enterprise edition features. For more information about SQL Server Enterprise editions and supported features, see the Microsoft documentation for your SQL Server version:
+ [SQL Server 2025](https://learn.microsoft.com/en-us/sql/sql-server/editions-and-components-of-sql-server-2025?view=sql-server-ver17)
+ [SQL Server 2022](https://learn.microsoft.com/en-us/sql/sql-server/editions-and-components-of-sql-server-2022?view=sql-server-ver16)
+ [SQL Server 2019](https://learn.microsoft.com/en-us/sql/sql-server/editions-and-components-of-sql-server-2019?view=sql-server-ver16)
+ [SQL Server 2017](https://learn.microsoft.com/en-us/sql/sql-server/editions-and-components-of-sql-server-2017?view=sql-server-ver16)
+ [SQL Server 2016](https://learn.microsoft.com/en-us/sql/sql-server/editions-and-components-of-sql-server-2016?view=sql-server-ver16)
+ [SQL Server 2014](https://learn.microsoft.com/en-us/previous-versions/sql/2014/getting-started/features-supported-by-the-editions-of-sql-server-2014?view=sql-server-2014)