framework-migration-legacy-modernize - Legacy Code Modernization Workflow
Orchestrate legacy system modernization using the strangler fig pattern to gradually replace components while maintaining continuous operations.
Tags
Updated: 2026-09-23Capabilities
Typical Inputs
Typical Outputs
What this skill does
- Analyze legacy codebase and technical debt
- Map system dependencies and integration points
- Assess business impact and migration risks
- Establish test coverage and contract tests
- Set up strangler fig routing infrastructure
- Modernize components using 12-factor principles
- Audit and harden component security
- Conduct performance load testing and optimization
- Execute progressive rollout with feature flags
- Decommission replaced legacy components safely
Inputs
- Legacy codebase path ($ARGUMENTS)
- Implementation playbook resource
Outputs
- Legacy assessment report and risk matrix
- Dependency map and integration point catalog
- Prioritized migration roadmap
- Test coverage report and test suite
- API gateway configuration and feature flags
- Modernized components and security audit report
- Performance test results and optimization recommendations
- Rollout plan with automated safeguards
- Decommissioning checklist and documentation
Requirements
- Task tool with specialized subagents support