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Software Fortresses: Modeling Enterprise Architectures by Janet Van Sickler, Roger Sessions

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2.3. Treaty–Ally Diagram

Usually the entire enterprise architecture is a bit much to digest at once. If we take a subset of the architecture showing only those fortresses involved in a particular treaty, the FAD reduces to a treaty–ally diagram (TAD). A TAD is easier to work with than a full FAD. The TAD in Figure 2.3 diagrams one of the treaties (Login) from Figure 2.2.

Figure 2.3. A TAD for the Login Treaty

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