Mainframe Modernisation: How Enterprises Can Get the Most from AWS Transform

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Summary

Mainframe modernization has remained a persistent enterprise priority for decades, but execution has always been the hard part — these systems run critical operations, embed decades of undocumented business logic, and sit inside strict regulatory and resilience requirements. AWS Transform, an agentic AI-powered modernization platform, combines mainframe, Windows, and VMware transformation capabilities in a single environment covering estate assessment, dependency mapping, business logic extraction, and code conversion.

It details how the platform extends beyond core mainframe workloads to Java, Python, and Node.js runtime upgrades and organization-specific transformation rules, and explains why its partner ecosystem — bringing in specialist tools for data replication, COBOL replatforming, and file transfer — matters for large, mixed-estate migrations. Production evidence for the platform is strongest in North America and Europe, with an emerging set of Asia-Pacific reference deployments in financial services and retail.

What mainframe owners should establish before committing budget and timelines takes center stage: their own estate assessment, regulatory readiness under frameworks governing operational resilience, parallel-running and disaster-recovery costs, and a plan for the institutional change that modernization forces on how teams develop, operate, and govern critical systems.

  • Covers what CIOs, CFOs, and CROs should each prioritize when evaluating the business case
  • Distinguishes technology-driven acceleration from the governance and change-management work that determines whether it succeeds

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