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AWS m2 documentation change

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

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

Summary

Updated service availability information with new closure date for self-managed experience and existing managed environment status

Security assessment

Change focuses on service availability timelines. The generic mention of security improvements lacks evidence of addressing specific vulnerabilities or introducing new security capabilities.

Diff

diff --git a/m2/latest/userguide/tutorial-ba-developer.md b/m2/latest/userguide/tutorial-ba-developer.md
index e8f201ea5..bb0569974 100644
--- a//m2/latest/userguide/tutorial-ba-developer.md
+++ b//m2/latest/userguide/tutorial-ba-developer.md
@@ -9 +9,3 @@ Step 1: Create a databaseStep 2: Access the environmentStep 3: Set up the runtim
-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).