Introduction

The Internet of Things covers a huge range of industries and use cases that scale from a single constrained device up to massive cross-platform deployments of embedded technologies and cloud systems connecting in real-time.

Tying it all together are numerous legacy and emerging communication protocols that allow devices and servers to talk to each other in new, more interconnected ways.

At the same time, dozens of alliances and coalitions are forming in hopes of unifying the fractured and organic IoT landscape.

IoT data protocols are used to connect low power IoT devices. These protocols provide point-to-point communication with the hardware at the user side without any Internet connection. Connectivity in IoT data protocols is through a wired or a cellular network. Some of the IoT data protocols are:

1. MQTT

2. CoAP

3. AMQP

We shall look at them one by one in the following sections.

pageMessage Queue Telemetry Transport (MQTT)pageConstrained Application Protocol (CoAP)pageAdvanced Message Queuing Protocol (AMQP)pageComparison of IoT Protocols