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

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5.3. Heterogeneous Synchronous Drawbridges

Heterogeneous synchronous drawbridges differ from their homogeneous cousins in that they are designed to link fortresses built on different technology bases—for example, .NET and WebSphere.

Many organizations standardize on heterogeneous synchronous drawbridges because such drawbridges can accommodate requests from both homogeneous and heterogeneous fortresses, or even from fortresses outside the organization. I usually do not recommend standardizing all drawbridges as heterogeneous. The homogeneous performance optimization is worth using, where you can. As far as external fortresses go, you will never accept an external request through a heterogeneous synchronous drawbridge. Instead you will insist ...

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