Architecture Evolution and Technical Debt Questions

Approaches for evolving system architecture and managing technical debt while maintaining product velocity. Topics include migration strategies such as incremental refactoring and the strangler pattern, planning and risk management for rearchitectures, decomposing a monolith into services, data migration and backward compatibility techniques, measuring and prioritizing technical debt, governance and versioning policies, tradeoffs between quick fixes and long term rewrites, and operational and testing considerations during migration. Candidates should be able to explain decision criteria, phased migration plans, and how they balanced delivery with debt reduction.