Why do we need a web server ?

Why do we need a web server ?

In an Web or Enterprise Application perspective, you need a webserver as a first entry point since all the requests have to be originated from a single place. Say, your login page to the application. But processing the login operation may not be the job of a Web Server and it would be done by a Web Application.

As such, a Web Server is preferred to serve any static files, which is not changing in nature for any type of requests. Whereas, you need a Web application to produce a dynamic response according to the type of inputs you provide along with your request.