Communication protocols between IoT devices and the cloud

In Chapter 4, we discussed the application layer of the OSI model as it applies to wireless connectivity. The application layer, also known as Layer 7, interacts with software applications and serves as a data communication component.

Indeed, the communication protocols between IoT devices and the cloud are very important in determining how well IoT solutions work. These protocols are designed to meet the specific needs of IoT ecosystems, such as using low power, sending as little data as possible, and making sure data is transmitted reliably even when the network isn’t stable. These protocols are part of the application layer of the OSI model.

Several popular protocols are used in IoT with the cloud today, including Message Queueing Telemetry Transport (MQTT), User Datagram Protocol (UDP), Constrained Application Protocol (CoAP), and Lightweight Machine-to-Machine (LwM2M). Let’s learn more about some of...