ITIL (Information Technology Infrastructure Library) introduction can be presented in a lot different ways because it is a set of concepts and techniques for managing information technology (IT) infrastructure, development, and operations.
ITIL is published in a series of books , each of which cover an IT management topic. The names ITIL and IT Infrastructure Library are registered trademarks of the United Kingdom’s Office of Government Commerce (OGC).

In recent version of the ITIL3 there are five core volumes included those are givena s under;

Service Strategy
Service Design
Service Transition
Service Operation
Continual Service Improvement 

The previous version (ITIL version 2) was replaced in May 2007.

Alternatives of ITIL

There are few ISO numbers that are being used as an alternative of ITIL but they cannot cover the whole ITIL. They are covering few parts of the ITIL.

ISO 27001

ISO 20000

Few other certifications are given as under;



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