ITIL

The Information Technology Infrastructure Library (ITIL) is a framework of best practice approaches intended to facilitate the delivery of high quality information technology (IT) services. ITIL outlines an extensive set of management procedures that are intended to support businesses in achieving both high financial quality and value in IT operations. These procedures are supplier-independent and have been developed to provide guidance across the breadth of IT infrastructure, development, and operations.

ITIL is published in a series of books (hence the term Library), each of which covers a core area within IT Management. The names ITIL and IT Infrastructure Library are Registered Trade Marks of the United Kingdom's Office of Government Commerce (OGC).

Although developed during the 1980s, ITIL was not widely adopted until the mid 1990s. This wider adoption and awareness has led to a number of standards, including ISO/IEC 20000 which is an international standard covering the IT Service Management elements of ITIL. ITIL is often considered alongside other best practice frameworks such as the Information Services Procurement Library (ISPL), the Application Services Library (ASL), Dynamic Systems Development Method (DSDM), the Capability Maturity Model (CMM/CMMI), and is often linked with IT governance through Control Objectives for Information and related Technology (COBIT).

Overview of the ITIL 2 library:

The IT Infrastructure Library originated as a collection of books each covering a specific practice within IT Service Management. After the initial publication, the number of books quickly grew within ITIL v1 to over 30 volumes. In order to make ITIL more accessible (and affordable) to those wishing to explore it, one of the aims of ITIL v2 was to consolidate the publications into logical 'sets' that grouped related process guidelines into the different aspects of IT management, applications and services.

While the Service Management sets (Service Support and Service Delivery) are by far the most widely used, circulated and understood of ITIL publications, ITIL provides a more comprehensive set of practices as a whole. Proponents believe that using the broader library provides a comprehensive set of guidance to link the technical implementation, operations guidelines and requirements with the strategic management, operations management and financial management of a modern business.

The eight ITIL version 2 books and their disciplines are:

Service Support
- Service Desk
- Incident Management
- Problem Management
- Configuration Management
- Change Management
- Release Management

Service Delivery
- Service Level Management
- Availability Management
- Capacity Management
- IT Financial Management
- IT Service Continuity Management

ITIL is built around a process-model based view of controlling and managing operations often credited to W. Edwards Deming. The ITIL recommendations were developed in the 1980s by the UK Government's CCTA in response to the growing dependence on IT and a recognition that without standard practices, government agencies and private sector contracts were independently creating their own IT management practices and duplicating effort within their Information and Communications Technology (ICT) projects resulting in common mistakes and increased costs.

In April 2001 the CCTA was merged into the Office of Government Commerce (OGC), an office of the UK Treasury.

One of the primary benefits claimed by proponents of ITIL within the IT community is its provision of common vocabulary, consisting of a glossary of tightly defined and widely agreed terms. A new and enhanced glossary has been developed as a key deliverable of the ITIL v3 (also known as the ITIL Refresh Project).

Overview of the ITIL v3 library:

ITIL v3, published in September 2007, comprises 6 key volumes:

1. Introduction to the ITIL Service Life Cycle
2. Service Strategy
3. Service Design
4. Service Transition
5. Service Operation
6. Continual Service Improvement

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