Toyota reverses 45 years of COBOL
AWS used Amazon Q Developer to reverse‑engineer 45 years of Toyota's mainframe COBOL code in a single day, accelerating migration and modernization efforts for legacy systems. The demonstration underscores how AI-assisted tooling is fast‑tracking large enterprise migrations. (x.com)
AWS says Amazon Q Developer produced detailed documentation for Toyota’s legacy mainframe codebase in less than a day, and external coverage reports the tool analyzed “tens of millions” of COBOL lines during the engagement. (aws.amazon.com) (nextlink.cloud) Toyota Motor North America told AWS the legacy system underpinning parts of its supply‑chain is more than 45 years old, and prior modernization efforts had stalled before the Q Developer work. (antstack.com) (aws.amazon.com) AWS first unveiled Amazon Q Developer transform capabilities at re:Invent 2024 and placed the mainframe transformation features into public preview on December 3, 2024. (aws.amazon.com 1) (aws.amazon.com 2) Toyota reported a concrete productivity gain of roughly 1,500 hours saved on manual documentation after deploying Q Developer agents to analyze code and generate docs. (aws.amazon.com) (youtube.com) AWS documentation and blog posts state the same tooling can perform automated COBOL-to-Java refactors, decompose monoliths into business domains, and produce automated test artifacts to preserve functional equivalence. (aws.amazon.com) (docs.aws.amazon.com) AWS announced that the previewed capabilities matured into AWS Transform for mainframe and moved to general availability in May 2025, with AWS positioning the service to cut multi‑year modernization timelines down to months for IBM z/OS workloads. (aws.amazon.com 1) (aws.amazon.com 2)
