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Whenever a conflict arose, the entire team compared estimates and discussed them. The purpose of this exercise was to identify potential weak links in the schedule and then to plan for them. Ultimately, the project manager allowed each team member to determine his or her own estimate within a phase. The only estimate he imposed on the team member was to complete the phase while adhering to the deadline for the entire project. For some projects the area of responsibility dictates not only tasks but responsibility for an entire phase. For others, one phase will encompass work for several, even for all, of the members. In. | Published in association with the Best Management Practice Partnership Best Management Drsrtira ửSMF The IT Service Management Forum An Introductory Overview of ITIL v3 A high-level overview of the IT INFRASTRUCTURE LIBRARY The IT Infrastructure Library An Introductory Overview of ITIL V3 Version 1.0 Written by Edited by Alison Cartlidge Xansa - Steria Ashley Hanna HP Colin Rudd itEMS Ltd Ivor Macfarlane IBM John Windebank Sun Stuart Rance HP Alison Cartlidge Xansa - Steria Mark Lillycrop itSMF UK Published by The UK Chapter of the itSMF With thanks to all those who took part in the review process. Copyright itSMF Ltd 2007 This version first published 2007 Based on other copyright material with the permission of the copyright owners. ITIL is a Registered Trade Mark and a Registered Community Trade Mark of the Office of Government Commerce OGC and is registered in the US Patent and Trade Mark Office. PRINCE is a Registered Trade Mark and a Registered Community Trade Mark of the Office of Government Commerce OGC and is registered in the US Patent and Trade Mark Office. COBIT is a Registered Trade Mark of ISACA and the ITGA. CMM is registered in the USA Patent and Trademark Office. PMBoK is a Registered Trade Mark of the Project Management Institute. M_o_R is a Registered Trade Mark and a Registered Community Trade Mark of the Office of Government Commerce. Crown copyright material reproduced with the kind permission of OGC on behalf of the Controller of Her Majesty s Stationery Office HMSO . The Swirl logoTM is a Trademark of the Office of Government Commerce. ISBN 0-9551245-8-1 1 About this guide ITIL IT Infrastructure Library provides a framework of Best Practice guidance for IT Service Management and since its creation ITIL has grown to become the most widely accepted approach to IT Service Management in the world. This pocket guide has been designed as an introductory overview for anyone who has an interest in or a need to understand more about the objectives .