A computer-implemented system for receiving an incoming message including a message header and a message body in General Inter-ORB Protocol (GIOP) type format, the system comprising: an external ORB element based on a computer configured to convert the header of the incoming message to an implementation-specific format, and configured to provide the header in implementation-specific format with the body in GIOP type format to a distribution mechanism for identifying an appropriate target server for processing the body of the incoming message; and an internal ORB element based on an originating server configured to convert the body of the outgoing message to CORBA GIOP type format to a distribution mechanism.