SOAP
Internet protocol
SOAP is a messaging protocol specification for exchanging structured information in the implementation of web services in computer networks. Wikipedia
Designed by: Dave Winer; Don Box; Bob Atkinson; Mohsen Al-Ghosein
First appeared: Initially as XML-RPC in June 1998; 25 years ago
Stable release: 1.2 / 27 April 2007; 16 years ago