A computer used solely to provide processing power for application programs.

a computing platform whose primary function is to provide application-oriented services to users within the business environment

a program that provides services to other programs, usually over a network connection

a system that provides the execution environment that is at the core of network computing or web-based architectures, providing a full set of services

A computer that implements applications, such as prepaid calling, "class 5" services, automated operator services, etc., and interfaces with a softswitch in order to permit interactions with a caller.

application service provider