Michael developed the PolicyEngine API Architecture Modernization Roadmap for the policyengine-app repository, delivering a comprehensive technical specification to guide the evolution of the existing API. He focused on defining a target architecture that prioritizes cost reduction, maintainability, and observability, supporting both budgeting and migration planning. His approach included detailed cost modeling, phased migration strategies, and enhanced requirements for system resilience. Michael’s work relied on skills in API design, cloud computing, and technical writing, using Markdown to produce stakeholder-facing documentation. The roadmap aligned product and engineering teams, providing a clear path for future development without direct bug fixes during the period.