This article is published by AllBusiness.com, a partner of TIME. What are "APIs?" An API (Application Programming Interface) is a set of protocol routines, and tools for building software.

An even simpler definition is that an API is the part ... For this reason, you might see a reference to the API surface area of a program. The API surface area is the outside layer of the program ...

The language and message format that applications use to communicate with the operating system, other OS-related software (system software) and software-based platforms. This software-to-software ...

APIs already define the ways that companies interact ... This does not make life easier for API program and platform managers, but it does create a very dynamic ecosystem in which you can always ...

An application programming interface (API) is a set of programming ... Accounts of May 2025 Visual Basic for Applications (VBA): Definition, Uses, and Examples Merrill Guided Investing vs.

A set of instructions by which an application program (a complete program that performs a specific function directly for the user) can access the computer's operating system. This term was viewed ...