The Simple Object Access Protocol (SOAP) facilitates interoperability among a wide range of programs and platforms, making existing applications accessible to a broader range of users. SOAP combines the proven Web technology of HTTP with the flexibility and extensibility of XML. This article takes you on a comprehensive tour of Object RPC technology to help you understand the foundations of SOAP and the ways it overcomes many of the limitations of existing technologies, including DCOM and CORBA. This is followed by a detailed treatment of the SOAP encoding rules with a focus on how SOAP maps onto existing ORPC concepts.
MSDN Magazine March 2000
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