The internationally accepted collection of guidelines and principles for development and operations of IT and ITSM, which is short for IT Service

Management are involved in the idea of IT Systems Library® , better known as ITIL®. Having established in the 80's by the U.K government subsidiary Central

Computer and Telecommunications Agency, shortened CCTA, ITIL was in fact aimed at having basic collection of guidelines in management of information

technology among government departments and private enterprises. Nevertheless, ITIL has been largely acknowledged and enforced by a number of

agencies around the world in recent times. The further advancement of ITIL guidelines, publications and introducing its latest editions are performed under

the auspices of the U.K Office of Government Commerce.

ITIL V1, that had around thirty volumes made it through for fifteen years till it was at last substituted by ITIL V2 in the year 2002. 8 main titles and one add-on which had been introduced in the year 2006 were the key attributes of ITIL V2 however it didn't have process improvement methodology or even use case

studies. Moreover, V2 possessed just mere paper documentation in lieu of real-life situations. As a result, ITIL professionals regarded it to be incompetent at

responding to the evolving concerns furnished by the rapidly expanding Information technology field.

Along with its 5 core titles, ITIL V3 was released in In 2007, as a way to deal with the solutions generated by V2. The 5 titles are:

1. ITIL Service Strategy

2. ITIL Service Design

3. ITIL Service Transition

4. ITIL Service Operation

5. ITIL Continual Service Improvement

ITIL Service Strategy is the center point of the ITIL Service Lifecycle. According to ITIL, “the Service Strategy volume provides guidance on how to design, develop, and implement service management not only as an organizational

capability but also as a strategic asset.†Processes include Demand �Management, Financial Management, Strategy Generation, and Service

Portfolio Management.

Offering help and advice for the design and development of services and Service management are thought to be the objective of the Service Design Publication. Supplier Management, Service Level Management, Availability Management,

Capacity Management, IT Service Continuity Management, Service Catalog Management and Security Management are considered as the processes

included.

ITIL further states that purpose of the Service Transition Publication is to provide guidance for the development and improvement of capabilities for transitioning new and changed services into operations. This stage includes processes such as Service Asset and Configuration Management, Evaluation

Management, Release and Deployment Management, Change Management, and Knowledge Management.

According to ITIL, the Service Operation publication gives “tips on obtaining efficiency and effectiveness in the delivery and support of services in an effort

to assure value the service provider and the customer.†This particular phase is �designed to include processes like Access Management, Incident Management, Application Management, Request Fulfillment, Event Management, Technical

Management, IT Operations Management and Problem Management.

The Continual Service Improvement Volume has as its core objective providing necessary guidance in creating and maintaining value for customers through

better design, introduction and operation of services. The seven steps in the CSI process which defines what you should and can measure are gathering,

processing and analyzing the data; presenting and using the information; and carrying out corrective action.

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