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A point-to-point topology
is one where the participants compute directly with each other
rather than using a centralized or semi-centralized intermediary.
Note:
In an SOA, routing intermediaries may exist in a point-to-point
conversation. A web service may call another web service directly
(point-to-point), but the SOAP message may be routed via intermediaries
(SOAP Routers). In this function, the routers may have forwarded
the message but played no role in executing the invoked operations.
Thus, passive intermediaries are not considered 'hubs' that would
break the point-to-point model. In an SOA, point-to-point refers
to the application layer, not the network routing layers.
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