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3. - Must-know: Key API terms : Read more in this section
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- 1. - API management: What you need to know
- 2. - The latest with APIs: Trends and effective use cases
An application program interface (API - and sometimes spelled application programming interface) is the specific method prescribed by a computer operating system or by an application program by which a programmer writing an application program can make requests of the operating system or another application.
An API can be contrasted with a graphical user interface or a command interface (both of which are direct user interfaces) as interfaces to an operating system or a program.