When developing applications that target XML Web services, you will most often target XML Web services that are already installed on a Web server. Although this is the norm, there will also be cases where you want to target a different XML Web service when the production version of your application is deployed. For example, you may have targeted a test version of an XML Web service on your development server, but the finished application needs to target an installed version of the XML Web service on another server. You might also want to allow the person installing the application to choose a version of the XML Web service during installatio..
