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Which Communication Protocol is the best for IoT?

The Internet of Things is a massive ecosystem of connected devices that has been growing all over the world for the last decade or two. IoT implementations span over many industries, including automotive, manufacturing, transportation, medicine, security systems, and many others. IoT systems are made of objects that are enabled to collect, process, and send data to other connected objects, applications, or servers over the internet.

The IoT system can only work and transfer information online only when devices are safely connected to a network.

How does that happen? With the help of a special language that allows these connected objects to talk with each other. This language consists of different IoT standards and protocols. Note that general protocols we use for tablets, smartphones, and personal computers often don’t suit IoT-powered solutions due to factors such as power consumption, range, or bandwidth.

That’s why so many IoT network protocols have been developed so far and are still evolving. So which communication protocol is the best for IoT? Read on to find out.


IoT developers can choose from many great connectivity options. One of them is Lightweight M2M, a communication protocol designed specifically for remote device management and telemetry within the IoT and other M2M applications. It reduces power and data consumption, which makes it a perfect match for devices with limited processing and storage capabilities. Unlike other IoT protocols, the architecture of this protocol supports four logical interfaces which standardize device management and telemetry.


Standing for Message Queue Telemetry Transport, MQTT is a lightweight protocol for sending simple data flows from sensors to applications, as well as middleware. It works on top of TCP/IP and contains three components: a subscriber, publisher, and broker. The publisher is responsible for collecting data and sending it to subscribers. The broker tests publishers and subscribers for authorization and security. The protocol is perfect for small, low-memory, and low-power devices.


DDS (Data Distribution Service) is an IoT standard for high-performance, real-time, and scalable machine-to-machine communication. It’s based on two layers:

Data-Centric Publish-Subscribe (DCPS) – it delivers the information to subscribers,

Data-Local Reconstruction Layer (DLRL) – it provides an interface to DCPS functionalities.

DDS will work for low-footprint devices and those connected to the cloud.

These protocols are popular among IoT implementations today and are bound to evolve together with the technology into the future.

Lindsay Shearer
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