Information Technology Infrastructure Library (ITIL) is a set of best practices for IT service management, development and operations.
ITIL gives detailed descriptions of a number of important IT concepts and includes checklists, tasks and procedures that can be tailored for any enterprise.
Some major areas ITIL covers are:
ICT Infrastructure Management
Software Asset Management
In the Service Support area ITIL covers processes such as Service Desk, Incident and Problem Management, Change Management, Release and Configuration Management.