A domain model represents the main concepts, objects, rules, and relationships within an application domain.
It provides a simplified view of the relevant real world. Therefore, it helps stakeholders understand the environment in which a system operates.
A structural model shows entities, attributes, and associations. For example, a class diagram may connect Customer, Order, and Product. In contrast, a domain story can show how actors interact with objects and systems.
Teams use a domain model to define common terms and clarify complex business knowledge. Moreover, they can identify missing information, inconsistent definitions, and unclear relationships.
The model may describe the current situation or a planned future state. However, it should remain independent of technical implementation details.
Clear domain models reduce ambiguity and support requirements elicitation, analysis, communication, and solution design.
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