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.