How does Web API validate username and password?

The following is the procedure for creating a login form in the Web API.

Web API is a programming interface/application type that provides communication or interaction between software applications . Web API is often used to provide an interface for web sites and client applications to have data access. Web APIs can be used to access data from a database and save data back to the database.

In ASP.NET or ASP.NET Core, calling a web API is done in the controller:

1) Configure the API Request URL and Authorization header as ‘Basic Auth, then mention FortiAuthenticator admin name and password as ‘REST API’ key received by mail . 2) Configure the POST data in JSON format.