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

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Summary

We have now completed our first stop on the software fortress tour. We have covered the two fortress types that are Internet intermediaries. The major points are these:

  • Presentation fortresses deal with browser clients.

  • Web service fortresses deal with foreign processes.

  • Both presentation and Web service fortresses act as security buffers between the outside world and your precious computing systems.

  • As of press time, Microsoft's .NET technologies have several important advantages for the presentation fortress. There are no obvious differentiators for the Web service fortresses, although IBM does seem to have taken an early lead among the J2EE vendors.

  • Scalability of Web service and presentation fortresses is achieved through IP load balancing ...

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