Service model component data classes

A service model component type is the data class that defines a logical or physical IT resource that participates in the delivery of business services. Service model configuration items (CIs) can represent a hardware component, an application, a service, or a business entity. A CI can be any aspect of the business for which service management is desired. 

Service model CIs are organized in a hierarchy of data classes in which each class represents a component type. The further down the hierarchy a particular class occurs, the more specific its type.