ITIL v3 lifecycle
The Service Lifecycle 1. Service Strategy 2. Service Design 3. Service Transition 4. Service Operations 5. Continual Service Improvement (CSI) The original version of ITIL was a manual published in the 1980s to help government IT departments in the United Kingdom establish a framework for best practices . IT professionals can be accredited under four levels for ITIL v3: Foundation, Intermediate, Expert and Master. The Foundation level covers the terminology and basic concepts of ITIL as a whole, while the higher levels go into greater depth for each of ITIL's five major topics.