Information technology (IT) is the use of Computers to store, retrieve, transmit, and manipulate Data or information . IT is typically used within the context of business operations as opposed to personal or entertainment technologies. IT is considered to be a subset of informations and communication technology (ICT). An information technology system (IT system) is generally an information system, a communications system, or, more specifically speaking, a computer system – including all hardware, software, and peripheral equipment – operated by a limited group of users