The Information Technology Infrastructure Library (ITIL) is a set of practices for IT service management (ITSM) that focuses on aligning IT services with the needs of business. In its current form (known as ITIL 2011 edition), ITIL is published in a series of five core publications, each of which covers an ITSM lifecycle stage. ITIL underpins ISO/IEC 20000(previously BS15000), the International Service Management Standard for IT service management, although differences between the two frameworks do exist.

ITIL describes processes, procedures, tasks and checklists that are not organization-specific, used by an organization for establishing integration with the organization's strategy, delivering value and maintaining a minimum level of competency. It allows the organization to establish a baseline from which it can plan, implement, and measure. It is used to demonstrate compliance and to measure improvement.

The acronym ITIL is a registered trademark of the United Kingdom's Cabinet Office. Following this move, the ownership is now listed as being with HM Government rather than OGC. The publications continue to be Crown Copyright.

ITIL 2007 Edition (previously known as version 3) is an extension of ITIL v2 and fully replaced it following the completion of the withdrawal period on 30 June 2011.^[4] ITIL 2007 provides a more holistic perspective on the full life cycle of services, covering the entire IT organisation and all supporting components needed to deliver services to the customer, whereas v2 focused on specific activities directly related to service delivery and support. Most of the v2 activities remained untouched in 2007, but some significant changes in terminology were introduced in order to facilitate the expansion.

Below 2 videos will give brief introduction of ITIL

Topics Covered in below Video

Topics Covered in below Video 

The ITIL Qualifications scheme provides a modular approach to the ITIL framework, and is comprised of a series of qualifications focused on different aspects of ITIL Best Practice, to various degrees of depth and detail.

These are the levels of qualifications within the scheme:

The modular, tiered structure of the qualification not only offers candidates the flexibility in relating to the different disciplines and areas of ITIL, but generally makes ITIL qualifications more accessible and achievable.