Azure App Service Diagnose and Troubleshoot
App Service will soon have a new experience for diagnosing and solving problems. With this new UI, we'll make it easier to distinguish between application issues (your code) and platform issues (App Service). We'll also provide quick solutions (Fix it!) tailored to the problems you might experience.
The UI will provide a view of the health of your application and platform, as well as traffic over the previous 24 hours. Any availability issues detected in that time window will be listed below the graphs, and you'll be able to drill down into more detail from there.
Learn more about Azure App Service.