Information Technology of management.

Information technology management (or IT management or management information system) is a combination of two branches of study, information technology and management.
Strictly speaking, there are two incarnations to this definition. One implies the management of a collection of systems, infrastructure, and information that resides on them. Another implies the management of information technologies as a business function.
The first definition stems from the practice of IT Portolio Management and is the subject of technical manuals and publications of various information technologies providers; while the second definition stems from the discussion and formation of the Information Technology Infrastructure Library(ITIL).
The ITIL has been in practice throughout regions of the world mainly conducted by IT service providers consulting companies. The relative paucity in the use of the best practice set can be attributed to a lack of awareness among IT practitioners