The ISO 20000 Series of Certification for IT Service is a collection of multiple standards that includes a certification standard, vocabulary, and guidance standards.
The ISO 20000 Standard consists of two main parts. First, ISO 20000-1 (Part 1) provides the organization requirements of an IT Service Management (ITSM) system, then ISO 20000-2 (Part 2) gives guidance on best practices for application of an IT Service Management System (ITSM) System based on the previous requirements.
