4 links
Simple Object Access Protocol (SOAP) 1.1
3.org
The W3C Note on the Simple Object Access Protocol 1.1 submission.
Simple Object Access Protocol (SOAP) 1.2
3.org
W3C Working Draft 9 July 2001. SOAP version 1.2 is a lightweight protocol for exchange of information in a decentralized, distributed environment. It is an XML based protocol.
XML Protocol (XMLP) Requirements
3.org
Describes the XML Protocol Working Group's requirements for the XML Protocol (XMLP) specification.