Why is the MQTT protocol preferred over HTTP in the IoT world?

The MQTT protocol is a lightweight publish/subscribe messaging protocol designed for use in low-power environments such as sensors, controllers, and other small devices. The protocol has since been extended to support a wider range of applications, including the Internet of Things (IoT). MQTT is now one of the most popular protocols for IoT applications due to its low overhead and ease of use. This blog post will explore why MQTT is preferred over HTTP in the IoT world.

What is MQTT?

The MQTT protocol is a machine-to-machine (M2M)/”Internet of Things” connectivity protocol. It was designed as an extremely lightweight publish/subscribe messaging transport. It is useful for connections with remote locations where a small code footprint is required, and network bandwidth is at a premium.

MQTT was invented by Dr. Andy Stanford-Clark of IBM, and Arlen Nipper of Arcom (now Eurotech), in 1999. The protocol has been increasingly used in recent years as the internet of things has become more popular. MQTT is now an ISO standard (ISO/IEC PRF 20922).

There are several advantages that make MQTT a good choice for use in the internet of things:

-It is lightweight, making it ideal for use in constrained or low-power devices

-It uses a publish/subscribe messaging model, which simplifies the development of apps that need to communicate with many devices

-It has built-in device management capabilities

-It is secure, with support for SSL/TLS encryption

What is HTTP?

HTTP is the short form of Hypertext Transfer Protocol. HTTP is a communication protocol that is used to transfer data between a web browser and a web server. It is the foundation of data communication for the World Wide Web.

HTTP has been in use since the early days of the internet, and its popularity has grown steadily over the years. Today, HTTP is used by billions of people around the world to access information on the internet.

The main reason for HTTP’s popularity is its simplicity. HTTP is a simple protocol that allows users to request and receive data from a web server. This simplicity makes it easy to implement, and it also makes it easy for users to understand how it works.

Another advantage of HTTP is that it’s very efficient. It uses very little bandwidth, which means it can be used on slow internet connections without any problems.

Finally, HTTP is highly reliable. It’s been designed to work well even in hostile environments, such as those with high network congestion or packet loss.

The Difference Between MQTT and HTTP

MQTT is a much lighter-weight protocol than HTTP and is, therefore, better suited for use in constrained environments, such as on devices with limited processing power or memory. MQTT messages are also smaller than HTTP messages, making them more efficient to transmit over a network.

In addition, MQTT has built-in support for Quality of Service (QoS) levels, which allows for guaranteed message delivery. This is important in applications where lost or delayed messages could have serious consequences. HTTP does not have any inherent support for QoS levels.

Finally, MQTT is designed to be used asynchronously, while HTTP is designed for synchronous communication. Asynchronous communication is often preferred in applications where real-time data is not critical, as it can free up resources on the device by not requiring a constant connection to the server.

Why is MQTT preferred in the IoT world?

The MQTT protocol is a machine-to-machine (M2M) connectivity protocol for light data transmission. It is used in many industrial and consumer applications requiring a small code footprint. The MQTT protocol has been around for many years and was initially developed by IBM.

MQTT is preferred in the IoT world for several reasons:

1. Low bandwidth requirements: The MQTT protocol uses very little bandwidth, making it ideal for use in constrained environments such as cellular networks or satellite connections.

2. Efficient data exchange: MQTT messages are typically much smaller than HTTP messages, so less data needs to be exchanged between devices. This makes communication more efficient, especially over long distances.

3. Easy to implement: The MQTT protocol is simple and easy to implement, even on resource-constrained devices. Many open-source libraries are available that make it quick and easy to start MQTT development.

4. Proven reliability: The MQTT protocol has been around for many years and has been used in various environments, from industrial settings to consumer applications. Its proven reliability makes it a good choice for mission-critical IoT applications.

How to use MQTT in the IoT world?

MQTT is a lightweight and popular communication protocol designed for the IoT world. It is very efficient in terms of bandwidth and CPU usage, making it ideal for use in constrained environments.

There are many MQTT clients available for a variety of platforms. Many programming languages also have libraries that make it easy to work with MQTT.

To use MQTT in your IoT project, you need a broker. This is a server that receives and forwards messages from clients. There are many open-source and commercial brokers available.

Once you have a broker, you can connect your devices and send and receive messages.

What are the benefits of MQTT?

The key benefits of MQTT are its efficiency, reliability, and scalability. It is designed to be lightweight and efficient, using a publish/subscribe model that minimizes network traffic. It is also very reliable, with features like the quality of service and error checking. Finally, it is highly scalable, allowing thousands of clients to connect to a single server.


MQTT is a popular protocol in the IoT world for several reasons. First, it is designed specifically for small devices with limited resources. Second, it is very efficient, using a publish/subscribe model that minimizes network traffic. Finally, it is very reliable, with built-in features like the quality of service and error checking. For these reasons and more, MQTT is often the preferred protocol for IoT applications.

I hope this article has helped you to understand the basics of MQTT and its many benefits. With the increasing demand for IoT solutions, MQTT will become even more popular in the coming years.

Leave a Comment