Internet protocol suite |
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Application layer |
Transport layer |
Internet layer |
Link layer |
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Family | Messaging protocol |
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Designed by |
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First appeared | Initially as XML-RPC in June 1998 |
Stable release | 1.2
/ 27 April 2007 |
This article needs additional citations for verification. (December 2023) |
SOAP (formerly an acronym for Simple Object Access Protocol) is a messaging protocol specification for exchanging structured information in the implementation of web services in computer networks. It uses XML Information Set for its message format, and relies on application layer protocols, most often Hypertext Transfer Protocol (HTTP), although some legacy systems communicate over Simple Mail Transfer Protocol (SMTP), for message negotiation and transmission.