**AWS Mainframe Modernization self-managed experience** is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization self-managed experience, explore capabilities from vendor-direct offerings and from AWS Transform. 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). 

**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). 

# Refactoring applications automatically with AWS Transform for mainframe
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Automated refactoring with AWS Transform for mainframe provides an end-to-end solution for migrating and modernizing your mainframe applications. The steps in the refactoring process are as follows:
+ Analyze inventory
+ Analyze dependencies
+ Automatically transform code
+ Capture and manage test scenarios

You can complete the previous steps in the AWS Transform for mainframe refactor tool, available through single sign-on from the AWS Mainframe Modernization console. For more information on AWS Transform for mainframe refactor, see the [AWS Transform for mainframe refactor documentation](https://bluinsights.aws/docs/). 

 When you are satisfied with the transformed source code, it's time to move to AWS: **build** and **deploy** the refactored application using [AWS Transform for mainframe Runtime](ba-runtime-options.md).

This guide will help you understand the runtime concepts and how to use them in your modernization project.

**Topics**
+ [AWS Transform for mainframe releases](ba-releases.md)
+ [AWS Transform for mainframe Runtime concepts](ba-shared-concept.md)
+ [Set up configuration for AWS Transform for mainframe Runtime](ba-runtime-config.md)
+ [AWS Transform for mainframe Runtime Error Codes](ba-runtime-error-codes.md)
+ [AWS Transform for mainframe Runtime APIs](ba-runtime-endpoints.md)
+ [AWS Transform for mainframe Runtime Utilities](system-utilities.md)
+ [Set up AWS Transform for mainframe Runtime](ba-runtime-setup.md)
+ [Modify the source code with AWS Transform for mainframe Developer IDE](ba-modify-source.md)
+ [AWS Transform for mainframe FAQ](ba-faq.md)