Does AWS IoT allow a certificate for multiple devices?


I'm using dynamoDB to save data from multiple devices and I noticed that only the last connected device that sends the data, never all simultaneous. Then I saw that it was because of the certificates and that I would have to register the devices one by one. But it turns out that I will use more than 10000 devices and it will be almost impossible to register one by one. So if I had a certificate that worked for all devices it would help a lot.

asked a year ago708 views
1 Answer

Hi. You can use one certificate for multiple devices, but it's an anti-pattern. It's best practice to have a unique certificate for every device. This limits blast radius to a single device if a device is compromised.

AWS has numerous methods of device provisioning that can help you provision devices at scale:

Please review that material and we'd be more than happy to answer subsequent questions.

profile pictureAWS
answered a year ago

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