Web API

A Web API (Application Programming Interface) is a set of rules that allows different software applications to communicate over the internet. Think of it as a menu in a restaurant: it lists available services and how to request them. When one application needs data or functionality from another—like fetching weather info or submitting a form—it sends a request through the API. The API then processes this request and returns the relevant response. This mechanism enables different systems, even built with different technologies, to work together efficiently and securely across the web.