--- title: "New video: What is an MQTT broker?" description: In this tutorial video, you'll learn what an MQTT broker is and what advantages it can provide for IoT and IIoT applications. image: https://blog.opto22.com/hubfs/WhatisMQTTBroker_video_ss.png --- - [Log in](https://www.opto22.com/logon?returnurl=%2f) - [Register](https://www.opto22.com/Special-Pages/Logon.aspx) - [Your Cart](https://www.opto22.com/Checkout/Shopping-Cart) - [Contact Us](https://www.opto22.com/support/contact-us) [![Opto 22 Logo](https://blog.opto22.com/hubfs/opto22_lightsilvergradient_800px.png "Opto 22 Logo")](https://www.opto22.com) - [Products](https://www.opto22.com/products) - [What Do You Want to Do?](https://www.opto22.com/products/what-do-you-want-to-do) - [groov RIO](https://www.opto22.com/products/groov-rio) - [groov EPIC System](https://www.opto22.com/products/groov-epic-system) - [Case Studies](https://www.opto22.com/products/groov-case-studies) - [Product Selector](https://www.opto22.com/products/product-selector) - 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Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Mar 8, 2019, 8:23:27 AM - [Tweet](https://twitter.com/share) ### This latest video in our Automation 101 series provides a deeper dive and explanation of the MQTT central server, or the "broker". As you recall from previous posts, the industrial MQTT communication protocol is a powerful tool that allows you to exchange device data freely among devices and applications, with little or no IT involvement. Its simplicity and flexibility make it a popular choice for today's IIoT applications. We've added a [new video to the Automation 101 series](https://www.opto22.com/support/resources-tools/videos/video-what-is-an-mqtt-broker) that gives a thorough explanation of the MQTT broker. The communication model of MQTT offers several benefits over the traditional poll and response model. [![What is an MQTT broker?](https://blog.opto22.com/hs-fs/hubfs/WhatisMQTTBroker_video_ss.png?width=500&name=WhatisMQTTBroker_video_ss.png)](https://www.opto22.com/support/resources-tools/videos/video-what-is-an-mqtt-broker) In this tutorial, we'll take a look at an MQTT broker and what advantages it can provide for IoT and IIoT applications. The video covers: - How the MQTT model works - What an MQTT broker is and where it can run - Useful features and functionality that the broker provides - Retain messages - Birth, death, and last will and testament messages [![WATCH VIDEO](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/439485/9902cb49-0d82-4a75-9055-ab84e08e20d2.png)](https://hubspot-cta-redirect-na2-prod.s3.amazonaws.com/cta/redirect/439485/9902cb49-0d82-4a75-9055-ab84e08e20d2) MQTT communication is built into the [*groov* EPIC](https://www.opto22.com/products/groov-epic-system) (Edge Programmable Industrial Controller). Learn more about MQTT's advantages with this *groov* EPIC [architecture example ](https://www.opto22.com/products/groov-epic-system/a-groov-epic-architecture-example)using MQTT/Sparkplug. You can also review the complete [Internet of Things video playlist](https://www.opto22.com/support/resources-tools/videos/playlist-internet-of-things-(iot)) for other helpful videos! And as always, our [pre-sales engineering](https://www.opto22.com/support/contact-us) team is ready to answer your questions!  Email [systemseng@opto22.com ](mailto:systemseng@opto22.com)or call +1-951-695-3000.   Topics: [Videos](https://blog.opto22.com/optoblog/topic/videos), [IIoT](https://blog.opto22.com/optoblog/topic/iiot), [Industrial Internet of Things](https://blog.opto22.com/optoblog/topic/industrial-internet-of-things), [MQTT](https://blog.opto22.com/optoblog/topic/mqtt), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [developer](https://blog.opto22.com/optoblog/topic/developer) ### Written by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) Janice has worked at Opto 22 for over 20 years and is part of the marketing team that strives to share new and relevant content with the industrial automation industry. She enjoys books, camping, country music, and spending time with family and friends. 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