ArchiMate Metamodel
The specialization relationship indicates that an element is a particular kind or group of another
element.
The specialization relationship has been inspired by the generalization relationship in UML class diagrams, but is applicable to specialize a wider range of concepts. The specialization relationship can relate any instance of a concept with another instance of the same concept.
A specialization relationship is always allowed between two instances of the same element.
Figure 142 : Specialization (architecture_autodiagram)