ITIL Intermediate is the learning zone after the ITIL Foundations certificate.
It has two major streams - Service Capability and Service Lifecycle - followed by a unit called Managing Across the Lifecycle. Completing a minimum of 22 credits in the Capability and or Lifecycle units as well as completing the Managing Across the Lifecycle unit will qualify you for the ITIL Expert Certification.
The best page for understanding how these units work together and what combination is permissible for the Expert Qualification can be found here http://www.itil-officialsite.com/qualifications/creditprofiler.aspx
Service Capability Units
Service Capability is currently the most offered stream among most commercial providers - this may be because the Capability stream is intended to provide education on the implementation of ITIL whereas the Lifecycle stream follows the ITIL books themselves.
The Units in the Service Capability Stream are:
- Service Offerings and Agreements
- Release, Control and Validation
- Operational Support and Analysis
- Planning, Protection and Optimization
Service Lifecycle Units
The Units in the Service Lifecyle Stream are:
- Service Strategy
- Service Design
- Service Transition
- Service Operation
- Continual Service Improvement