AWS Mainframe Modernization is AWS's managed service for moving COBOL, PL/I, and Assembler workloads onto AWS, offered in two patterns. Replatform, powered by Rocket Software's Enterprise Suite (formerly Micro Focus), recompiles existing COBOL and PL/I largely unchanged onto AWS infrastructure. Refactor converts the application and its data layer into a Java stack — an Angular front end over an API-driven Java backend — while preserving functional equivalence. Refactor originally ran on the Blu Age automated-conversion engine; as of 2025 those capabilities are folded into AWS Transform for mainframe, AWS's agentic modernization service, which reached general availability in May 2025.
Mainframe Modernization
AWS Mainframe Modernization is AWS's managed service for moving COBOL, PL/I, and Assembler workloads onto AWS, offered in two patterns. Replatform, powered by Rocket Software's Enterprise Suite (formerly Micro Focus), recompiles existing COBOL and PL/I largely unchanged onto AWS infrastructure. Refactor converts the application and its data layer into a Java stack — an Angular front end over an API-driven Java backend — while preserving functional equivalence. Refactor originally ran on the Blu Age automated-conversion engine; as of 2025 those capabilities are folded into AWS Transform for mainframe, AWS's agentic modernization service, which reached general availability in May 2025.
