AWS m2 documentation change

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

File: m2/latest/userguide/utilities-m2.md

Summary

Updated service availability information: announced closure of new customer access for AWS Mainframe Modernization self-managed experience effective July 30, 2026, and restated closure for Managed Runtime Environment experience.

Security assessment

The change communicates service availability changes without referencing security vulnerabilities or introducing new security documentation. The mention of security improvements is incidental to the availability announcement.

Diff

diff --git a/m2/latest/userguide/utilities-m2.md b/m2/latest/userguide/utilities-m2.md
index f3b0c4204..5b599d6df 100644
--- a//m2/latest/userguide/utilities-m2.md
+++ b//m2/latest/userguide/utilities-m2.md
@@ -9 +9,3 @@ Binary Location
-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).