"API versioning" ensures that software developers can manage changes in Application Programming Interfaces (APIs) without disrupting existing functionalities. By maintaining multiple versions of an API, developers provide backward compatibility for applications still using older versions. This practice allows for the introduction of new features, enhancements, or bug fixes while minimizing the impact on users and dependent systems. Effective API versioning also simplifies integration processes for developers, ensuring smoother transitions as applications evolve and adapt to changing requirements.