Where are the details of core and enhancing services provided?

The definitive media library stores authorized master copies of licensed software media, not descriptions of services offered to customers.

The configuration management system holds data about configuration items and their relationships, not service descriptions or service classifications.

The service portfolio encompasses the entire service lifecycle including pipeline and retired services, but it is the catalogue specifically that surfaces core and enhancing service details to customers.

The service catalogue is the published subset of the service portfolio that lists all operational IT services and their details. It specifically captures core services (the fundamental services customers depend on) and enhancing services (additional services that add value on top of core services), along with ownership, SLAs, and how to request them.