I have this scenario. Client requested us to have a WebService. I created a WCF Service. After we sent them our url to the web service description, client says
It is completely do-able. Just use an endpoint that exposes the service using basicHttpBinding or wsHttpBinding. The "file extension" of the URL doesn't make any difference to the client, only the content of the rerquest/response.
Here's a reference to another SO question: REST / SOAP endpoints for a WCF service