- WSDL 1.2: Based on WSDL 1.1 (W3C Note, March 2001)
- "Message exchange description"
- Describes:
- types and structures of messages
- Message Exchanges
- Protocol binding (HTTP, SOAP 1.2 over HTTP)
- Location (URI).
- "Take-it-or-leave-it" contract between the interacting
parties
