#レガシー改修 articles

4-Step Process to Speed Up Legacy Refactoring 5x with Claude Code

A guide to speeding up legacy refactoring an average of 5x with Claude Code using four steps: structure analysis, test-first, incremental refactoring, and regression verification. Includes a real example of cutting 80 hours to 16 hours for business system maintenance, plus a 4-phase estimation framework for contract work that protects your rates.