Explanation/Reference:
Avoid Point-to-Point Integrations. Point-to-point integrations are brittle, inflexible, and expensive to maintain. There are cases where point-to-point integrations are required but these should be handled as exception cases. Example exceptions include performance requirements that can only be met using point- to-point connections and when large amounts of data must be moved.
Reference: Oracle Reference Architecture, Service-Oriented Integration, Release 3.0