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Subject: Re: interposition requirements

There is huge potential for mis-deployment if we elect to support this model. I am concerned that several levels of indirection down the line, that someone will inadvertantly expose an internal resource to the web cloud. Besides, Mark's interposition thesis is correct either inside or outside the enterprise. In fact the flattening for performance only makes sense where you have reliable multicast.
One thing I forgot to include in my original reply.  There are two places that BTP might be used.  To coordinate calls among disparate, external web services and to coordinate calls to XML based services within an organizational boundry.   The registration of sub-participants with the root coordinator was being proposed as an optimization for the latter.

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