AWS m2 documentation change

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

File: m2/latest/userguide/mf-runtime-setup-allowlist.md

Summary

Updated service availability notice to include self-managed experience closure details and continued security investments.

Security assessment

Added documentation about ongoing security improvements for self-managed experience, but no evidence of addressing specific security incidents or vulnerabilities.

Diff

diff --git a/m2/latest/userguide/mf-runtime-setup-allowlist.md b/m2/latest/userguide/mf-runtime-setup-allowlist.md
index 988de1f01..76a87e593 100644
--- a//m2/latest/userguide/mf-runtime-setup-allowlist.md
+++ b//m2/latest/userguide/mf-runtime-setup-allowlist.md
@@ -7 +7,3 @@
-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).