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Domain modeling can be used to define the business layer in a [[022920240849 - Layered Architecture]]. This is all the business logic. It should be easy to understand and easy to change as this is the code that changes the most frequently.
A domain model can be comprised out of [[290220240843 - Value Object]], [[290220240842 - Entity]], Aggregates and functions that encompass domain procedures that do not necessarily fit in an object.
It is also fine to include Exceptions in the domain, e.g stock can go out of stock and thus when we would allocate an order it would raise an OutOfStock exception.
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