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AWS m2 documentation change

Service: m2 · 2026-07-01 · Documentation low

File: m2/latest/userguide/tutorial-runtime-ba.md

Summary

Added announcement about closure of new customer access for self-managed experience and separated Managed Runtime Environment availability notice

Security assessment

No evidence of security vulnerability remediation. The reference to 'security improvements' is general maintenance language without documentation of specific security features or vulnerabilities.

Diff

diff --git a/m2/latest/userguide/tutorial-runtime-ba.md b/m2/latest/userguide/tutorial-runtime-ba.md
index f890d1cc8..aefe22e57 100644
--- a//m2/latest/userguide/tutorial-runtime-ba.md
+++ b//m2/latest/userguide/tutorial-runtime-ba.md
@@ -9 +9,3 @@ PrerequisitesStep 1: Upload the demo applicationStep 2: Create the application d
-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).