SOAP / Simple Object Access Protocol
SOAP (Simple Object Access Protocol, a.k.a. Service Oriented Architecture Protocol) is a protocol for exchanging XML-based messages between applications over computer networks, normally using HTTP or HTTPS. There are several different types of messaging patterns in SOAP, but by far the most common is the Remote Procedure Call (RPC) pattern, in which one network node (the client) sends a request message to another node (the server), and the server immediately sends a response message to the client.
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