What is the purpose of an API versioning strategy?

An API versioning strategy serves to manage changes to an API without disrupting existing integrations. This is crucial for maintaining the functionality and reliability of applications that depend on the API. When changes are made to the API, such as updates to functionality or data structures, versioning allows developers to introduce these modifications in a controlled manner. By handling changes through versioning, organizations ensure that clients using older versions of the API continue to function appropriately while still allowing new clients to take advantage of the latest features.

Implementing a versioning strategy helps to avoid breaking changes that could lead to failures in applications relying on the API. This approach supports ongoing development and evolution of the API while respecting the needs of existing users, promoting stability and security within the ecosystem. This is particularly important in environments where multiple teams or external partners may be dependent on the API for their operations.