AWS m2 documentation change

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

File: m2/latest/userguide/applications-m2-ba-config-props.md

Summary

Updated service availability notice with new retirement timeline for self-managed experience

Security assessment

Identical to previous M2 change - mentions security investments in retirement notice without documenting security features or addressing vulnerabilities. No evidence of security incident response.

Diff

diff --git a/m2/latest/userguide/applications-m2-ba-config-props.md b/m2/latest/userguide/applications-m2-ba-config-props.md
index 659a0db9c..75b408837 100644
--- a//m2/latest/userguide/applications-m2-ba-config-props.md
+++ b//m2/latest/userguide/applications-m2-ba-config-props.md
@@ -9 +9,3 @@ Configuration properties reference
-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).