The back-end is the component of a client/server architecture or computer system kept away from the ultimate user. In a client/server architecture, the back-end is the server serving the clients. Back-ends may be mainframe or workstation computers, for example, to which peripherals are connected.
Wiki
The encyclopedia explains the major technical terms used to describe the technologies for the future markets of today, tomorrow and beyond. From A as in app to M as in MEMS right through to Z as in ZigBee.