API

An API (Application Programming Interface) is a well-defined set of rules that enables different software applications to communicate seamlessly. It acts as a bridge that facilitates the exchange of data and functionalities between systems, ensuring they work together efficiently.

In this context, an application refers to any software that either provides or consumes functionality, while the interface serves as a contract that defines how these applications interact. At its core, API architecture follows a client-server model, where the client is the application making a request, and the server is the system processing the request and returning a response. This structured communication allows developers to build scalable, modular, and interoperable software solutions.