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AWS Mainframe Modernization

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description AWS Mainframe Modernization Overview

AWS Mainframe Modernization is a cloud service provided by Amazon Web Services designed to help organizations migrate and modernize legacy mainframe applications. The platform offers two primary approaches: an automated refactoring option that translates legacy code like COBOL into modern Java architectures, and a replatforming option that runs mainframe operating systems in emulated environments. It is built for enterprises seeking to transition their mainframe workloads to AWS-managed infrastructure with reduced operational overhead.

help AWS Mainframe Modernization FAQ

What are the two migration approaches in AWS Mainframe Modernization?

AWS Mainframe Modernization supports automated refactoring and replatforming. AWS describes refactoring as transforming legacy code into modern applications, while replatforming aims to move workloads with fewer code changes. [AWS documentation](https://docs.aws.amazon.com/m2/latest/userguide/modernization-m2.html)

Can AWS Mainframe Modernization transform COBOL into Java?

AWS's refactoring tooling can transform COBOL and PL/I code into Java, with related transformations for JCL and mainframe screens. The result still requires application testing and validation against the original business behavior. [AWS Transform FAQ](https://docs.aws.amazon.com/m2/latest/userguide/ba-faq.html)

Does AWS Mainframe Modernization move data as well as application code?

The service covers migration planning, runtime environments, application modernization, integration, and testing, while data movement depends on the selected migration design. AWS documentation lists modern database targets such as Amazon Aurora PostgreSQL, RDS for PostgreSQL, Oracle, Microsoft SQL Server, and IBM Db2. [AWS Transform FAQ](https://docs.aws.amazon.com/m2/latest/userguide/ba-faq.html)

Is AWS Mainframe Modernization a one-click replacement for a mainframe?

No, the workflow includes discovery, architecture decisions, dependency integration, testing, and production cutover. AWS presents it as a staged migration process, not as an automatic switch that removes the need for mainframe and application specialists. [AWS modernization guide](https://docs.aws.amazon.com/m2/latest/userguide/modernization-m2.html)

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