AWS m2 documentation change

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

File: m2/latest/userguide/env-unhealthy.md

Summary

Replaced single paragraph with expanded service retirement notices: Added distinct sections for self-managed experience retirement and Managed Runtime Environment retirement.

Security assessment

The change only updates service status announcements. No evidence of security vulnerability remediation or new security guidance. References to security improvements are generic maintenance statements.

Diff

diff --git a/m2/latest/userguide/env-unhealthy.md b/m2/latest/userguide/env-unhealthy.md
index cf293a872..03fbb36cb 100644
--- a//m2/latest/userguide/env-unhealthy.md
+++ b//m2/latest/userguide/env-unhealthy.md
@@ -9 +9,3 @@ Common causeResolution
-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).