What are Web Servers?
For those just beginning to learn about web technologies, we thought it might be helpful to provide this foundational article. A Web server is a program that uses HTTP (Hypertext Transfer Protocol and the secure HTTPS version) to serve the files that form Web pages to visitors, in response to their requests (which come from the requesting computers browsers). Dedicated computers and appliances may be referred to as Web servers.
Web server also refers to server software, or hardware dedicated to running said software, that can serve contents to the World Wide Web. A web server processes incoming network requests over HTTP and related protocols. This Wikipedia link gives more information on Web Server.