In many cases, an invoked object and its caller do reside in different processes, often executed on different computers connected by a network. In order to enable such invocations across process boundaries and over the network, appropriate meachanisms and protocols are needed to support interoperability of these processes.

In earlier CORBA specifications (before version 2.0), these issues were left to the vendors of CORBA products. Indeed, different CORBA products contained different, incompatible protocols for invoking methods accross process boundaries. However, in many practical settings it is desireable to use different CORBA implementations for the client(s) and object implementation(s) (e.g., supporting different ...

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