AWS m2 documentation change
Summary
Updated service availability notice: Added announcement about closure of new customer access to AWS Mainframe Modernization self-managed experience effective July 30, 2026, and reiterated that Managed Runtime Environment experience remains closed to new customers.
Security assessment
The modification communicates service lifecycle changes without evidence of security incident response. The 'security improvements' mention refers to standard operational practices, not documentation of new security capabilities or vulnerability resolutions.
Diff
diff --git a/m2/latest/userguide/ba-release-notes.md b/m2/latest/userguide/ba-release-notes.md index d03280816..6f59ee93b 100644 --- a//m2/latest/userguide/ba-release-notes.md +++ b//m2/latest/userguide/ba-release-notes.md @@ -9 +9,3 @@ Release notes 5.125.0AWS Transform for mainframe RuntimeAWS Transform for mainfr -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).