API Design

API Versioning Without Breaking Integrations

Version APIs like products: with compatibility guarantees, migration windows, and clear consumer communication.

Core Strategy

Start with explicit versioning policy, compatibility contract tests, and objective deprecation timelines. Avoid ad hoc breaking changes in shared endpoints.

Implementation Pattern

  • Use semantic API versioning policy for major contract changes
  • Introduce adapter layers for legacy payload support
  • Maintain consumer-facing migration guides with examples
  • Enforce contract checks in CI before release

Operational Recommendations

Track endpoint adoption and sunset legacy versions only after objective usage thresholds and communication milestones are met.