What Is Server?

  • A server is a computer program that provides a service to another computer programs (and its user). In a data center, the physical computer that a server program runs in is also frequently referred to as a server. That machine may be a dedicated server or it may be used for other purposes as well. In the client/server programming model, a server program awaits and fulfills requests from client programs, which may be running in the same or other computers. A given application in a computer may function as a client with requests for services from other programs and also as a server of requests from other programs.