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.
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