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Legacy modernisation — verified transformation, not a rewrite

Transforms an old system by first writing characterisation tests — because documentation and tests do not exist.

DevelopmentPromptsListed 2026-09-05
What is inside

Build a modernisation platform that transforms legacy systems SAFELY, without blind rewrites. Legacy system -> characterisation -> dependency map -> risk analysis -> incremental transformation -> compatibility testing -> migration -> verification. Legacy systems typically have no reliable tests and no documentation. So the first step is NOT transformation — it is capturing the …

  • The pipeline
  • The problem
  • Characterisation tests — the key
  • Roles
  • Safety and rollback
  • Verification
  • Definition of done
  • Execution rule

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