IT Infrastructure Library® (ITIL®) is the most widely accepted approach to IT service ment in the world, and the only consistent and comprehensive documentation of best practice for IT Service Management. The ITIL® service management framework was initially developed by, and is maintained by the OGC (The UK governments Office of Government Commerce).
Organizations are becoming increasingly dependent on IT to satisfy their corporate goals and meet their business needs, this leads to an increased requirement for high quality IT services. This is why ITIL® was born.

ITIL has developed into a series of books: the IT Infrastructure Library®, which embodies good practice for IT service management. The Library provides a documented, systematic approach that will help organizations to deliver well managed IT services in the face of such difficulties as skill shortages, more exacting and unpredictable business requirements and user demands, and the growing complexity of IT systems. The books also give guidance on the provision of quality and cost effective IT services, and on the accommodation and environmental facilities needed to support IT.