AWS m2 documentation change

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

File: m2/latest/userguide/restart-environments-m2.md

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 Managed Runtime Environment closure.

Security assessment

Change only updates service availability information and sunset dates. Mentions ongoing security investments but doesn't address any specific vulnerability or weakness.

Diff

diff --git a/m2/latest/userguide/restart-environments-m2.md b/m2/latest/userguide/restart-environments-m2.md
index 2c1796ab6..13b28a9df 100644
--- a//m2/latest/userguide/restart-environments-m2.md
+++ b//m2/latest/userguide/restart-environments-m2.md
@@ -9 +9,3 @@ Restart a runtime environment
-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).