API versioning

API versioning is the practice of assigning distinct version identifiers to APIs, clearly marking different releases or iterations to manage changes systematically. Versioning enables developers to introduce updates, improvements, or breaking changes without disrupting existing clients using older versions. Common versioning schemes include semantic versioning (semver), URL-based versions (/v1/, /v2/), or header-based approaches. Proper API versioning ensures predictable, stable interactions, enabling gradual upgrades and maintaining backward compatibility.

API versioning is crucial because it ensures backward compatibility, allowing existing clients to function smoothly even as APIs evolve. By clearly managing and communicating breaking changes through distinct versions, developers can avoid unexpected disruptions and downtime for API consumers. Versioning facilitates organized rollouts of new features, deprecation of outdated functionality, and smoother transitions between API iterations. Additionally, clear version control simplifies API maintenance, documentation, and support, promoting better overall developer and user experiences.