The concept of API
The interest in API testing has grown significantly in recent years. It is caused by the increase in the number of web and mobile applications, as well as the separation of the server side and the user interface.
Before moving on to API testing tools, let's recall what an API means.
API (Application Programming Interface) is an interface for communication between software components.
Functional testing is performed on the user interface side. In contrast, API testing allows bypassing the visual interface and directly connecting to the application or website by sending requests to the server.