SOAP is a simple XML-based protocol that enables applications to exchange information over HTTP.

Or more simply: SOAP is a protocol for accessing web services.

SOAP Envelope Element syntax

The mandatory SOAP Envelope element is the root element of the SOAP message.

The required SOAP Envelope element is the root element of the SOAP message. It defines XML documents as SOAP messages.

SOAP Envelope Element example

  ... Message information goes here ...