WS-I: Service Description

http://www.ws-i.org/profiles/basicprofile-1.1.html#description

• The (WS-I Basic) Profile uses Web Services Description Language (WSDL) to enable the description of services as sets of endpoints operating on messages.

WS-I Basic Profile

http://en.wikipedia.org/wiki/WS-I_Basic_Profile

• The WS-I Basic Profile (official abbreviation is BP), a specification from the Web Services Interoperability industry consortium (WS-I), provides interoperability guidance for core Web Services specifications such as SOAP, WSDL, and UDDI.
• The profile uses Web Services Description Language (WSDL) to enable the description of services as sets of endpoints operating on messages.