WSDL (Web Services Description Language) is an XML format for describing the Web Services.

To learn more about the WSDL, read our WSDL tutorial.

WSDL 1.1 was suggested in note to W3C in March 2001 (by Ariba, IBM and Microsoft) as an XML format for describing Web Services.

The note also described how to use WSDL in conjunction with the SOAP 1.1, HTTP GET/POST, and MIME.

The W3C WSDL 1.1 document is only a NOTE available for the discussion. The publication of the note indicate no endorsement by the W3C.

The first working drafts were published on 17. December 2001.

The latest working drafts were published on 11. June 2003.

The XML Protocol Working Group at W3C is currently working on the WSDL 2.0.

Simple Internet technologies are used to access the information space of World Wide Web. These technologies are used to access the information across languages, cultures, and media.

To preserve the properties of the World Wide Web as technologies evolve, W3C has created a recommendation for core design components of the Web.

Architecture of the World Wide Web, Volume One is a W3C recommendation describing the standard protocols that supports the identification of, and interaction between Web resources.

W3C Web Services Home Page