Which process or function is responsible for the Definitive Media Library and Definitive Spares?

Facilities Management is an IT Operations Management function concerned with physical infrastructure and data center environments, not the controlled storage of software or spare hardware.

Access Management controls user rights and permissions to use services, and has no responsibility for managing physical or software asset repositories.

Request Fulfillment handles routine service requests from users and is not responsible for maintaining controlled asset libraries or spare component stores.

Service Asset and Configuration Management (SACM) is explicitly responsible for the Definitive Media Library, which stores authorized and protected master copies of software, and for Definitive Spares, which holds spare hardware components; SACM maintains these controlled stores as part of its mandate to track and protect all service assets and configuration items.