Concept: Domain
Domain is a Standard Category that is a logical grouping of work products which have an affinity to each other based on resources, timing, or relationship.
Main Description

A Domain is a refineable hierarchy designed to classify related Work Products. In other words, Domains are organized into trees where individual Work Products appear as the leaves. Conceptually, each Domain is a grouping of related Work Products that tend to be used for a similar purpose.

A single Work Product can be categorized in only one Domain.