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WDDX is an XML format for serializing and deserializing data structures between scripting languages.

SciFi Analog:

Your hash is Mr. Spock. He’s transformed into XML (energy) then HTTP’ed aboard Babylon 5 as a Minbari.

Less Silly Analogy:

You have a service written in Perl running on one server. You want to send data from it to a service written as a COM object on another. You use WDDX to map between the structures. The server running Perl writes out an XML document and sends it via HTTP to the NT server. The NT server parses the XML and reads it into a VB Object.

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