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Please note, the method CreateNewWorkbookUsingDeferentMethods actually demonstrates the full potential of Workbook Resource from Aspose.Cells for Cloud service. If you only wish to create a new spreadsheet on cloud storage, please use the following URI with HTTP command PUT. I have also attached an executable sample application (in an archive) here for your reference. You only need to update the AppSID & AppKey variables at the start of the Main method from console application.