Where are the details of core and enhancing services provided?

The definitive media library (DML) is a secure repository for authorized software versions and is unrelated to service definitions or descriptions.

The configuration management system (CMS) stores configuration item (CI) data and their relationships, not the definitions or details of core and enhancing services.

The service portfolio covers the full lifecycle of services including pipeline and retired services, but the specific details of live core and enhancing services are surfaced through the service catalogue, not the portfolio directly.

The service catalogue contains detailed information about all IT services currently available to customers, including core services (the primary deliverables) and enhancing services (optional additions that increase value). It is the customer-visible subset of the service portfolio and is the designated source for service details. Unlike the full portfolio, the catalogue focuses specifically on services that are live and accessible.