The ReportExecution2005 endpoint makes it easy for developers to customize report processing and rendering from a report server in both native and SharePoint integrated modes. The endpoint includes classes and methods that existed in earlier versions of the Report Server Web service. In addition, many new classes and methods have been added to the Report Server Web service that are exposed through the execution endpoint.
The WSDL for the management endpoint can be accessed using the following URL:
http://<Server Name>/ReportServer/ReportExecution2005.asmx?wsdl
If the report server is configured for SharePoint integrate mode, the WSDL can be accessed using the following URL:
http://<Server Name>/<Site Name>/_vti_bin/ReportServer/ReportExecution2006.asmx?wsdl
For more information, please see Accessing the SOAP API.