Microsoft Azure Diagnostics (WAD) enables you to collect diagnostic data from Cloud Services running in Microsoft Azure. WAD fulfills two new diagnostic gathering requirements introduced by the Microsoft Azure scale-out architecture: Save diagnostic data that would be lost during a reimaging of the instance.Provide a central repository for diagnostics from multiple instances. Using windows azure diagnostics, you can collect diagnostics data off of multiple instances at onceLinks: Troubleshooting Best Practices for Developing Microsoft Azure Applicationshttps://msdn.microsoft.com/en-us/library/windowsazure/hh771389.aspx Configuring Microsoft Azure Diagnostics using Visual Studiohttp://msdn.microsoft.com/en-us/library/windowsazure/dn186185.aspx Microsoft Azure Diagnostics Configuration Mechanisms and Order of Precedencehttp://msdn.microsoft.com/en-us/library/windowsazure/dn205146.aspx