General Inter-ORB Protocol
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In distributed computing, General Inter-ORB Protocol (GIOP) is the abstract protocol by which object request brokers (ORBs) communicate. Standards associated with the protocol are maintained by the Object Management Group (OMG).
IIOP (Internet Inter-ORB Protocol) is the implementation of GIOP for TCP/IP. It is a concrete implementation of the abstract GIOP definitions.
Legal status of the GIOP abbreviation
CORBA, IIOP and OMG are the registered trademarks of the Object Management Group and should be used with care. Differently, the GIOP is not the registered OMG trademark (see list of OMG trademarks). Hence in some cases it may be more appropriate just to say that the application uses or implements the GIOP-based architecture.