Extend Azure IoT Hub with a watchdog using Azure Functions


Once you are working with the Azure IoT platform, there comes a moment where you want to add notifications.


In a previous blog, we looked at how to send notifications when telemetry values did not match certain ranges. Although this is great, there are even more cases where we want notifications.


Here I am referring to watchdog functionality. When no telemetry is arriving anymore or devices are disconnected, the complete IoT platform is not working as designed. So we want to be informed when something fails.


In this blog, we will build a simple watchdog using Azure Functions.




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