Organizations[edit]
Organizations and management systems cannot claim certification as "ITIL-compliant". An organization that has implemented ITIL guidance in IT Service Management (ITSM), may be able to achieve compliance with and seek certification under ISO/IEC 20000. However, while relatively closely aligned, ISO/IEC 20000 and ITIL version 2 do not define identical processes.[40] This gap has become much wider with ITIL versions 2007 and 2011. ITIL now defines twice as many ITSM processes as ISO/IEC 20000 (26 compared to 13),[41] but there are also more subtle differences, e.g.[42]
ISO/IEC 20000 only recognises the management of financial assets, not assets which include "management, organization, process, knowledge, people, information, applications, infrastructure and financial capital", nor the concept of a "service asset". So ISO/IEC 20000 certification does not address the management of 'assets' in an ITIL sense.
ISO20000 does not recognise Configuration Management System (CMS) or Service Knowledge Management System (SKMS), and so does not certify anything beyond Configuration Management Database (CMDB).
An organization can obtain ISO/IEC 20000 certification without recognising or implementing the ITIL concept of Known Error, which is usually considered essential to ITIL.