service catalogue
also: service catalog, IT service catalogue, service registry
A comprehensive inventory or listing of IT services available to users within an organization, describing what each service does, how to access it, and who can use it.
A service catalogue is an organizational tool—not strictly a Linux technical feature—that documents all IT services offered, including both infrastructure services (like email, storage, databases) and application services. It serves as a reference guide for users to discover available services and for administrators to track service dependencies and ownership.
In Linux environments, service catalogues often include services managed by systemd, such as web servers, databases, and custom applications. For example, a catalogue might list that the "postgresql" service runs on a specific server, requires 20GB of disk space, is managed by the database team, and can be accessed via port 5432.
Service catalogues are commonly used in IT Service Management (ITSM) frameworks and cloud platforms. They form the foundation for service-level agreements (SLAs) and help organizations maintain visibility over their infrastructure and support ticket routing.