Web Servers

When you create a website, it must be published on a server computer that is connected to the Internet.

In order to communicate via HTTP protocol with personal computers around the world, the server computer must have web server software running.

There are many different types of web server software. The operating system (Unix, Linix, Windows, etc) determines the type of web server software that can be used.

World Wide Web - Conceptual Overview

The web server is responsible for responding to "http requests" for web pages.

Depending on the type of website you create, the web server software might also need to make requests to web applications, programming scripts and databases.