How to Connect IoT device to Google Cloud IoT Core

In this example, we will demonstrate how to connect an IoT device to Google Cloud IoT Core and enable two-way communication by using MQTT communication protocol. MQTT is a lightweight messaging protocol that enables messages being exchanged between IoT devices. By using this publish-subscribe network protocol, an IoT device can publish messages to one or more topics and all devices that subscribed to that topic will receive the messages. MQTT communication protocol is designed for unreliable networks and it is the most commonly used protocol in Internet of Things.

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