**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). 

# AWS Mainframe Modernization Code Conversion with mLogica
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AWS Mainframe Modernization Code Conversion with mLogica (Code conversion), is an AWS Mainframe Modernization feature that automatically converts z/OS mainframe Assembler code to COBOL. You can use Code conversion to pull an assembler image using the AWS CodeBuild service for your intended code conversion with your AWS account.

**Topics**
+ [What is Assembler Conversion with mLogica?](assembler-conversion-what-is.md)
+ [Understand Code conversion billing for Assembler conversion](assembler-conversion-billing.md)
+ [Code conversion concepts](assembler-conversion-concepts.md)
+ [Understand components and processes for Code conversion](assembler-conversion-components-process.md)
+ [Tutorial: Convert code from Assembler to COBOL in AWS Mainframe Modernization](assembler-conversion-steps.md)