Three releases a year means three version bumps in every integration. Not anymore.
Where
REST API endpoint URIs.
How
Replace the version segment, for example /services/data/v66.0/, with /services/data/latest/. The request resolves to the newest API version available in the org at call time.
Why
Integrations that only need current behavior stop accumulating stale version numbers. Pin an explicit version where you need stability; use latest where you want new fields and features to show up automatically.