Azure IoT Hub Service Library

The `azure-iot-hub` library is part of the Microsoft Azure SDK for Python, providing capabilities to manage IoT Hub resources and interact with connected devices from a backend service. This includes managing device identities, sending cloud-to-device messages, and invoking direct methods on devices. The current version is 2.7.0, and Azure SDKs typically follow a frequent release cadence, with minor updates and bug fixes released regularly.