With the Professional Edition license, you can use the WebViewer control to quickly display reports in any of four viewer types: HtmlViewer, RawHtml, AcrobatReader, or FlashViewer. You can also use the Silverlight Viewer control in Silverlight projects.
Important: Before using the WebViewer control, you must first Configure HTTPHandlers in IIS 7 and IIS 8.
With the Standard Edition license, you can export reports to use on the Web or use Web Services to distribute reports or data sources. For more information on Web exporting, please see the Custom Web Exporting (Std Edition) section.