What is the purpose and main areas of application of the API?

API (Application Programming Interface) is an interface for interaction between software components. Its main purpose is to provide a standardized way of exchanging data and calling functions between different applications or services.

Main areas of API application:

• Web services and microservices for data exchange between client and server.
• Integration of various systems and applications.
• Automation of processes and extension of software functionality.
• Access to the functionality of operating systems, libraries, and platforms.

Example: a mobile application uses the server's API to retrieve user data.