12. The integration services network of claim 11 , wherein facilitating communications between the first client machine and the first web service comprises: receiving a synchronous request from the client machine in accordance with the second description, and converting the synchronous request to an asynchronous message for transmission to the first web service in accordance with the first description.
11. The integration services network of claim 9 , wherein one or more conversion engines are further configured to facilitate communication between the client machine and the web service via the one or more conversion engines, to communicate asynchronously with the first web service in accordance with the first web service description file, and to communicate synchronously with the first client machine in accordance with the second web service description file.