AWS m2 documentation change
Summary
Updated service availability information: Added announcement about AWS Mainframe Modernization self-managed experience closing to new customers effective July 30, 2026, while retaining existing customer access. Added a new entry in the change history table for this update.
Security assessment
The change announces service retirement plans without referencing any security vulnerabilities, incidents, or patches. The mention of 'security and availability improvements' refers to ongoing maintenance, not new security features or vulnerability fixes.
Diff
diff --git a/m2/latest/userguide/doc-history.md b/m2/latest/userguide/doc-history.md index 2828d7141..2fcbe802d 100644 --- a//m2/latest/userguide/doc-history.md +++ b//m2/latest/userguide/doc-history.md @@ -7 +7,3 @@ -AWS Mainframe Modernization Service (Managed Runtime Environment experience) is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization Service (Managed Runtime Environment experience) explore AWS Mainframe Modernization Service (Self-Managed Experience). Existing customers can continue to use the service as normal. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html). +After careful consideration, we have made the decision to close new customer access to **AWS Mainframe Modernization self-managed experience** , effective July 30, 2026. Existing customers can continue to use the service as normal. AWS continues to invest in security and availability improvements for AWS Mainframe Modernization self-managed experience, but we do not plan to introduce new features. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html). + +**AWS Mainframe Modernization Service (Managed Runtime Environment experience)** is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization Service (Managed Runtime Environment experience) explore AWS Mainframe Modernization Service (Self-Managed Experience). Existing customers can continue to use the service as normal. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html). @@ -14,0 +17 @@ Change| Description| Date +AWS Mainframe Modernization self-managed experience will no longer be open to new customers starting June 30, 2026.| AWS Mainframe Modernization self-managed experience will no longer be open to new customers starting June 30, 2026. Existing customers can continue to use the service as normal. AWS continues to invest in security and availability improvements for AWS Mainframe Modernization self-managed experience, but we do not plan to introduce new features. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/mainframe-modernization-availability-change.html). | June 30, 2026