SKILL.md
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Modernize Legacy System
Estimated time: 4-12 weeks
This workflow guides engineering teams through the disciplined process of modernizing a legacy system. Rather than a risky big-bang rewrite, this workflow follows the proven strangler fig pattern: assess the current state, build a safety net of tests, refactor incrementally, containerize, and establish modern CI/CD practices.
Each step is designed to reduce risk. You build confidence through understanding before changing code, add tests before refactoring, and containerize before deploying to new infrastructure.
By the end of this workflow you will have: a comprehensive understanding of your codebase's health, a prioritized tech debt remediation plan, refactored code with test coverage, Docker containers, and a CI/CD pipeline for safe ongoing deployment.