Application Layer in OSI model

 The Open Systems Interconnection model (OSI model) is a conceptual model, originally conceived as the 7 layer onion skin architecture by Jack Holdsworth of ICL,[citation needed] that 'provides a common basis for the coordination of [ISO] standards development for the purpose of systems interconnection'. In the OSI reference model, the communications between a computing system are split into seven different abstraction layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.