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- ITIL Basics
- ITIL - Home
- ITIL - Overview
- ITIL - Terminologies
- ITIL - Service Basics
- ITIL - Service Lifecycle
- Service Strategy
- ITIL - Service Strategy Overview
- ITIL - Service Strategy Roles
- ITIL - Strategy Generation
- ITIL - Service Portfolio Management
- Business Relationship Management
- ITIL - Demand Management
- ITIL - Financial Management
- Service Design
- ITIL - Service Design Overview
- ITIL - Service Catalogue Management
- ITIL - Service Level Management
- ITIL - Capacity Management
- ITIL - Availability Management
- ITIL - Service Continuity Management
- Information Security Management
- ITIL - Supplier Management
- Service Transition
- ITIL - Service Transition Overview
- ITIL - Project Management
- ITIL - Change Management
- Service Assets and Configuration Management
- Release and Deployment Management
- ITIL - Service and Validation Testing
- Service Operation
- ITIL - Service Operation Overview
- ITIL - Event Management
- ITIL - Incident and Request
- ITIL - Problem Management
- ITIL - Access Management
- Continual Service Improvement
- CSI Overview
- Service Reporting
- ITIL Useful Resources
- ITIL - Quick Guide
- ITIL - Useful Resources
- ITIL - Discussion
ITIL - Service Lifecycle
The complete framework of ITIL is based on service lifecycle. Each lifecycle defines certain processes for effective service management.
![ITIL Lifecycle](/itil/images/itil_lifecycle.jpg)
Service lifecycle helps to amplify the service management approach and to achieve a better understanding of its structure. In the coming chapters, we will be discussing all such lifecycles individually with their processes and functions.
Processes and Functions
There are 26 processes and 4 functions in ITIL V3. These processes and functions are discussed in detail with each service lifecycle in further chapters.
Process
A process defines policies, standards, guidelines, activities, and work instructions. It takes some defined inputs to produce desired results.
Functions
A function is defined as group of people or tools required to carry out one or more processes and activities.