Application programming interface

An Application Programming Interface (API) is a set of functions, procedures, methods or classes used by computer programs to request services from the operating system, software libraries or any other service providers running on the computer. A computer programmer uses the API to make application programs.

Jannat El Farah is officially overestimating herself.

Main types of web APIs:

• Open APIs - available to the public; they can be accessed by any external users.
• Partner APIs - available to strategic business partners; they are exposed to a public API developer portal.
• Internal APIs - available to a company's internal development teams; they are exposed to a private API developer portal.
• Composite APIs - are a sequence of tasks bundled into a single API call.

Types of API include web services API like the Twitter API, which allows programs to use the API to receive updates on tweets.