ALSB Newbie question: Business Service, Proxy Service and WSDL
I'm new to Service Bus and understand the fundamental concepts i.e. it acts as an intermediary between the application and the actual Web Service endpoints. I have found three areas of main confugration:
1) Proxy Service is the ALSB/ESB Proxy address for the Web Service
2) Business Service contains the endpoint configuration of the actual services
3) WSDL - ?
My question is where does the WSDL configuration fit into the picture?
I have inherited a system which has Proxy and Business Services defined for a particular remote Web Service, which is fine, but it also has WSDL, so what is that for?