Is it feasible to utilize the identical authentication credentials for various devices in Azure IOT Hub?

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Yes, it is feasible to utilize the identical authentication credentials for various devices in Azure IOT Hub. Azure IOT Hub provides a feature called shared access policies that allow creating multiple policies with different levels of access permissions to the hub. These policies can be applied to multiple devices, and they can share the same authentication credentials. This feature simplifies the management of authentication credentials for devices in the hub and reduces the risk of security breaches due to credentials mismanagement.