ITIL Version 3's (V3) service lifecycle-based practice incorporates the best of V1 and V2 and tests current best practice for ITSM. Alongside the delivery of consistent, repeatable process activities as part of service quality, ITIL has always emphasised the importance of continual improvements. Focusing on the process elements involved in identifying and introducing service management improvements, this publication also deals with issues surrounding service retirement.Each of the five core titles shares a consistent structure; the various practice elements are easily navigated and extensively cross-referenced. Concepts and guidance in this publication include:- Business and technology drivers for improvement- Justification- Business, financial and organisational improvements- Methods, practices and tools- Measurement and control- Companion best practices