The full form of OSI is Open Systems Interconnection. It’s used on Computing ,Networking in Worldwide

The open systems interconnection (OSI) model for network communication. Established in 1983 by the International Organization for Standardization, the OSI model divides network protocols (standardized procedures for exchanging information) into seven functional “layers.” This communications architecture enables end users employing different operating systems or working in different networks to communicate quickly and correctly.

Open Systems Interconnection (OSI) is an effort to standardize networking that was started in 1977 by the International Organization for Standardization (ISO), along with the ITU-T.

International Standards organization (ISO) in 1974 produced an open system interconnection reference model.

It allows any computer system anywhere in the world to communicate with any other, as long as both obey OSI protocol standards.

OSI has codified in the reference model referred to as the OSI/RM. It is an abstract description of inter-process communications.

It defines types of objects that are used to describe an open system, the general relations among these types of objects, and general constraints on these types of object relations.

A seven-layer OSI model is used to represent the OSI/RM, its overall architecture, the services provided, the functions necessary to be performed, and peer protocols needed for achieving inter-process communication.