API (Application Programming Interface) helps in communication and data exchange between two software systems. API is a collection of functions which can be executed by another software program.
Let us now understand how an API works. When you use an application on your smartphone, the application connects to the Internet. It sends data to a server. The server will retrieve that data, interpret it, and perform the required actions. Then it sends it back to your phone. The application interprets that data and provides you with the information in a readable way without exposing the internal details.
Examples of API :
Google maps API
Amazon API
Twitter API
Third-party payment processing etc,.
