What does the term API refer to in computing?

The term API, or Application Programming Interface, refers to a set of rules and protocols for building and interacting with software applications. It serves as an intermediary between different software programs, allowing them to communicate with each other more easily. By providing a standardized way for developers to access functionalities of an application or service, APIs facilitate the integration of diverse systems, enabling them to work together.

APIs can define methods for requests and responses, specifying how software components should interact. This makes it easier for developers to implement complex features without needing to understand the underlying code or architecture of the application. As a result, APIs are fundamental in modern computing, particularly in enabling the development of mobile apps, web services, and cloud-based applications, thereby fostering innovation and expanded capabilities across various platforms.