Microsoft Azure is a leading PaaS service provider. The Azure IoT Hub is nothing but a fully managed service that enables secure and bidirectional communication with millions of IoT enabled devices using IoT protocols such as HTTPS, AMQP, and MQTT. It helps to connect, control, and manage these devices. Microsoft Azure provides easy-to-easy IoT SDK, which are available in various languages, such as C#, C, Node.js, and so on.