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README.md

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 # How to Use the Asynchronous Engine for Web Reporting 
 
 ## Overview 
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 - Handle the End User Report Designer and Web Document Viewer events to load data or create a document asynchronously. The key point is that these actions can be performed in the context of the current HTTP request in the [WebDocumentViewerOperationLogger](https://docs.devexpress.com/XtraReports/DevExpress.XtraReports.Web.WebDocumentViewer.WebDocumentViewerOperationLogger) and  [PreviewReportCustomizationService](https://docs.devexpress.com/XtraReports/DevExpress.XtraReports.Web.ReportDesigner.Services.PreviewReportCustomizationService) class methods. 
 - Drill Through navigation in the Web Document Viewer. Use the  **IDrillThroughProcessorAsync** interface. 
 - If an application uses JWT-based Authentication, use the **IWebDocumentViewerExportResultUriGeneratorAsync** interface to load exported documents to the storage asynchronously. 
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