Note:

You are viewing the documentation for an older major version of the AWS CLI (version 1). To view this page for the AWS CLI version 2, click here.

AWS CLI v1 entered maintenance mode on August 5, 2026 and will reach end-of-support on July 15, 2027. During maintenance mode, releases are limited to critical bug fixes and security issues. AWS CLI v1 will not receive API updates for new or existing services, or be updated to support new regions. For more information, see the maintenance mode announcement.

We recommend that you migrate to AWS CLI version 2. See the installation instructions and migration guide.

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m2

Description

Amazon Web Services Mainframe Modernization provides tools and resources to help you plan and implement migration and modernization from mainframes to Amazon Web Services managed runtime environments. It provides tools for analyzing existing mainframe applications, developing or updating mainframe applications using COBOL or PL/I, and implementing an automated pipeline for continuous integration and continuous delivery (CI/CD) of the applications.