ITIL - ISO/IEC 20000 Compared

General Comparisson
ITIL V2	ITIL V3	ISO 20000
Best Practice	Best Practice	Standard & Code of Practice
Individual Certification	Individual Certification	Certification of a Service Provider Organization and individuals (lately)
Best practice guidance, detailed description and implementation guidance	Best practice guidance, detailed description and implementation guidance slightly more prescriptive then V2	High-level requirements
Defines process and function roles and responsibilities	Defines process and function roles and responsibilities	Org. structure independant, defines few mandatory roles
Process based, 10 processes & 1 function	Service Lifecycle Based, 26 processes, 4 functions	Continual improvement based, 16 processes, no functions
Processes & Functions
ITIL V2	ITIL V3	ISO 20000
Planning to Implement Service Management	Continual Svc. Improvement	Planning and Implementing Service Management
Service Delivery	Svc. Strategy, Svc. Design, Continual Svc. Improvement	Service Delivery
Service Level Management	Service Level Management	Service Level Management
Service Reporting	- Reporting from SLM -	Service Reporting
Financial Management	Financial Management	Budgeting and Accounting for IT Services
IT Service Continuity Management	IT Service Continuity Management	Service Continuity and Availability Management
Availability Management	Availability Management
Capacity Management	Capacity Management	Capacity Management
- demand management from Capacity Management) -	Demand Management	-
Security Management	Information Security Management	Information Security Management
Service Support	Svc. Operation	Resolution Processes
Incident Management	Event Management, Request Fulfilment, Incident Management	Incident Management
Service Desk	Service Desk	- No functions in ISO 20k -
	Svc. Transition, Svc. Operation	Controll Processes
Configuration Management	Service Asset and Configuration Management	Configuration Management
Change Management	Change Management	Change Management
	Service Transition	Release Processes
Release Management	Release and Deployment Management	Release Management
	Svc. Design	Relationship Processes
-	Supplier Management	Supplier Management
	Svc. Strategy, Svc.Design, Svc. Improvement
	Parts of Service Portfolio Management, Service Level Management and Continual Service Improvement	Business Relationship Management