BOA (Basic Object Adaper) Basic Object Adapter POA (Portable Object Adaper) Portable Object Adapter IDL (Interface Definition Language) interface definition language OMG (Object Management Group) Object Management Group DCOM (Distributed Component Object Model) Distributed Component Object Model ORB (Object Request Broker) Object Request Agent RPC (Remote Procedure Calls) Remote Procedure Call BDA (Basic Object Adaper) Basic Object Adapter