A server is a computer program that provides a service to another computer programs . In a data center, the physical computer that a server program runs in is also frequently referred to as a server. 

There are different types of servers based on the nature of service they provide. Some of them are given as follows:

File server: This is a computer and storage device dedicated to storing files. Any user on the network can store files on the server. i Print server: This is a computer that manages one or more printers.

Network server: This is a computer that manages network traffic. i Database server: This is a computer system that processes database queries.

Application Server: This is a program that handles all application operations between users and an enterprise's backend business applications or databases.

Web Server: Web server is a computer that delivers (serves up) web pages. Every web server has an IP address and possibly a domain name. The server then fetches the named home page and sends it to our browser. Any computer can be turned into a Web server by installing server software and connecting the machine to the Internet.

Mail Server:

Mail server moves and stores mail over corporate networks.