You can add Push Notification Hubs to your Azure Web App, Azure Api App etc… (all Azure App Services). If you try to use the portal to add Push (a Notification Hub) to a Slot however this will fail. You will see the portal will just sit there with the message: “Connecting Web App to Notification Hub” forever.
The Push Notification Hub settings from the main site are inherited by the slots. You cannot define a unique Push setting for the slots. If you need different settings for testing for example, you need to simply create a new App Service and deploy to that.
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