A broad term that refers to anything related to computer technology, such as hardware, software, networks, and databases. IT includes the use of computers and software to process, store, retrieve, transmit, and protect information. In businesses, the IT department is typically responsible for providing technology infrastructure and services, including systems administration, technical support, data management, network security, and more. The term IT can also include job fields and careers that focus on the implementation and management of computer and information systems.