Server (computing) From Wikipedia, the free encyclopedia Jump to navigation Jump to search Wikimedia Foundation servers First WWW server located at CERN with its original sticker that says: "This machine is a server. DO NOT POWER IT DOWN!!" In computing, a server is a computer program or a device that provides functionality for other programs or devices, called " clients ". This architecture is called the client–server model , and a single overall computation is distributed across multiple processes or devices. Servers can provide various functionalities, often called "services", such as sharing data or resources among multiple clients, or performing computation for a client. A single server can serve multiple clients, and a single client can use multiple servers. A client process may run on the same device or may connect over a network to a server on a different device. [1] Typical servers are database servers