A server is a computer that provides services and resources to other devices on a network. Servers control access to hardware, software, and data, provide centralized storage, and share software. There are different types of servers including web servers, application servers, database servers, file servers, mail servers, proxy servers, DNS servers, FTP servers, print servers, and backup servers. Servers come in various form factors such as tower servers, rackmount servers, blade servers, and cloud servers.