What is Device Twin in Azure IoT? (2021) | Learn Technology in 5 Minutes

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Azure device twins are JSON document containing device state information. Azure IoT hub maintains a device twin for every added IoT device. A device twin includes Tags; Desired properties, Reported properties and Device identity properties. Check out this video to know more.
Resource Link: docs.microsoft.com/en-us/azur...
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КОМЕНТАРІ: 7

@51w2 2 роки тому

excellent summary and explanation. super. well done.

@MAKERDEMY 2 роки тому

Thank you kindly!

@kavindabuddhi 2 роки тому

Very good explanation

@MAKERDEMY 2 роки тому

Thank You.

@Enigma758 10 місяців тому

You did a good job explaining WHAT a device twin is, but nowhere do you state WHY is is needed. It's always good to begin with the WHY before explaining the WHAT. Maybe you only know what they do, but not why they are needed.

@liyaodong2 2 роки тому

Thanks for the detailed explanation. I have a small question which might not be related to the technical parts. Why is the json configuration called "device twin" instead of some other more understandable name like "device config"?

@MAKERDEMY Рік тому

Hi Yd Li. Device Twin is the naming convention used by Azure to refer to the JSON document, associated with a specific device, and stored by IoT Hub in the cloud where you can query them. A device twin contains desired properties, reported properties, and tags. A desired property is set by a back-end application and read by a device. From the developer perspective it may just be a JSON for device configuration, but as this is connected to the Azure Platform, various other services can access this information to understand the status report of the device. We hope this clarified your doubt. We hope this was helpful.