Functionalities proposed by MEGA Architecture for modeling complex infrastructures enable representation of equipment and organizational resources required for system operation, interactions between components, communication means supporting these interactions, and services offered and used by the modeled architecture.

The components described can follow modeling methodology that is ascending (from most detailed to most conceptual) or descending (from most conceptual to most detailed).

Presentation of these functionalities is based on the example of a support center, presented using a descending approach from resource architecture diagrams and an artifact assembly diagram.

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