MQTT - The Standard for IoT Messaging

<!doctype html> <html lang="en"> <head> <meta charset="utf-8"> <title>MQTT - The Standard for IoT Messaging</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <meta http-equiv="Content-Language" content="en"> <meta name="description" content="A lightweight messaging protocol for small sensors and mobile devices, optimized for high-latency or unreliable networks, enabling a Connected World and the Internet of Things"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <link rel="me" href="https://fosstodon.org/@mqtt"> <link rel="canonical" href="https://mqtt.org/">  <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png"> <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png"> <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">  <link href="/assets/css/style.css" rel="stylesheet"> <link href="https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,400;0,700;1,400;1,700&display=swap" rel="stylesheet"> <script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>  <script async src="https://www.googletagmanager.com/gtag/js?id=UA-50721873-8"></script> <script> window.dataLayer = window.dataLayer || []; function gtag(){dataLayer.push(arguments);} gtag('js', new Date()); gtag('config', 'UA-50721873-8'); gtag('config', 'GA_TRACKING_ID', { 'anonymize_ip': true }); </script> <meta name="google-site-verification" content="rAqJUZCjZlUbyl6J8w-zmhxfpEHTQq4hrnhPnWueBgI" /> </head> <body> <header id="homepage-header"> <div id="homepage-header-img"> <img src="/assets/img/mqtt-logo-transp.svg" id="mqtt-logo-header" class="float-left"> <hr style="border-top: 1px solid #fff; border-bottom: none; margin: 10px auto 0;" class="width-container" id="header-hr"> <div id="homepage-intro"> <h1 style="font-size: 32px;">MQTT: The Standard for IoT Messaging</h1> MQTT is an OASIS standard messaging protocol for the Internet of Things (IoT). It is designed as an extremely lightweight publish/subscribe messaging transport that is ideal for connecting remote devices with a small code footprint and minimal network bandwidth. MQTT today is used in a wide variety of industries, such as automotive, manufacturing, telecommunications, oil and gas, etc. <br/><br/> <a href="/getting-started/"><button class="major-cta major-cta-tranpsparent">Getting started with MQTT</button></a> </div> </div> </header> <nav id="mobile-nav" class="mobile-nav-home"> <div id="burger-menu"><img src="/assets/img/burger-menu.svg"></div> <div id="mobile-nav-open"> <a href="/getting-started/"><div class="mobile-nav-item">Getting started</div></a> <a href="/mqtt-specification/"><div class="mobile-nav-item">MQTT Specification</div></a> <a href="/software/"><div class="mobile-nav-item">Software</div></a> <a href="/use-cases/"><div class="mobile-nav-item">Use Cases</div></a> <a href="/faq/"><div class="mobile-nav-item">FAQ</div></a> </div> <script> $('#burger-menu').click(function(){ if ( $('#mobile-nav-open').css('display') == 'none' ) $('#mobile-nav-open').css('display','block'); else $('#mobile-nav-open').css('display','none'); }); $('.mobile-nav-item').click(function(){ $('#mobile-nav-open').css('display','block'); }); </script> </nav> <nav id="main-nav" class="homepage-nav float-left"> <div class="nav-item"><a href="/getting-started/">Getting started</a></div> <div class="nav-item"><a href="/mqtt-specification/">MQTT Specification</a></div> <div class="nav-item"><a href="/software/">Software</a></div> <div class="nav-item"><a href="/use-cases/">Use Cases</a></div> <div class="nav-item"><a href="/faq/">FAQ</a></div> </nav> <main> <section id="homepage-content"> <div class="width-container"> <h2>Why MQTT?</h2> <section id="keyfeature-list"> <div class="keyfeature"> <h3>Lightweight and Efficient</h3> <p>MQTT clients are very small, require minimal resources so can be used on small microcontrollers. MQTT message headers are small to optimize network bandwidth. </p> </div> <div class="keyfeature mid"> <h3>Bi-directional Communications</h3> <p>MQTT allows for messaging between device to cloud and cloud to device. This makes for easy broadcasting messages to groups of things. </p> </div> <div class="keyfeature last"> <h3>Scale to Millions of Things</h3> <p>MQTT can scale to connect with millions of IoT devices. </p> </div> <div class="keyfeature"> <h3>Reliable Message Delivery</h3> <p>Reliability of message delivery is important for many IoT use cases. This is why MQTT has 3 defined quality of service levels: 0 - at most once, 1- at least once, 2 - exactly once </p> </div> <div class="keyfeature mid"> <h3>Support for Unreliable Networks</h3> <p>Many IoT devices connect over unreliable cellular networks. MQTT鈥檚 support for persistent sessions reduces the time to reconnect the client with the broker. </p> </div> <div class="keyfeature last"> <h3>Security Enabled<br /> </h3> <p>MQTT makes it easy to encrypt messages using TLS and authenticate clients using modern authentication protocols, such as OAuth. </p> </div> </section> <h2>MQTT Publish / Subscribe Architecture</h2> <section id="pub-sub-graphic"> <img src="/assets/img/mqtt-publish-subscribe.png" alt="MQTT: publish / subscribe architecture" title="MQTT: publish / subscribe architecture" /> </section> </div> <section id="mqtt-in-action"> <h2>MQTT in Action</h2> <p>MQTT is used in a wide variety of industries</p> <div class="flex-wrap-centered"> <a href="/use-cases#automotive"><div class="mqtt-in-action-box" style="background-image: url('assets/img/automotive.jpg');">Automotive</div></a> <a href="/use-cases#logistics"><div class="mqtt-in-action-box" style="background-image: url('assets/img/logistics.jpg');">Logistics</div></a> <a href="/use-cases#manufacturing"><div class="mqtt-in-action-box" style="background-image: url('assets/img/manufacturing.jpg');"><span style="color: #000">Manufacturing</span></div></a> <a href="/use-cases#smarthome"><div class="mqtt-in-action-box" style="background-image: url('assets/img/smart-home.jpg');">Smart Home</div></a> <a href="/use-cases#consumer-products"><div class="mqtt-in-action-box" style="background-image: url('assets/img/consumer-products.jpg');"><span style="color: #000">Consumer Products</span></div></a> <a href="/use-cases#transportation"><div class="mqtt-in-action-box" style="background-image: url('assets/img/transportation.jpg');">Transportation</div></a> </div> </section> </section> </main> <footer> <p class="float-left">© 2024 MQTT.org | <a href="/legal"><span style="color: #000;">Legal Note</a></span></a></p> </footer> </body>  <script> jQuery(document).ready(function($) { // set a variable for the anchor link which is the location.hash var anchorLink = $(window.location.hash); // test to see if the link is a anchor link, if not the length will have no value, this is done to avoid js errors on non anchor links if ( anchorLink.length ) { // set an element as the fixed entity, header in this case and get its height var offsetSize = $("header").innerHeight(); // fire the animation from the top of the page to the anchor link offsetting by the fixed elements height, the number is the speed of the animation $("html, body").animate({scrollTop: anchorLink.offset().top - offsetSize }, 500); } }); </script> </html>

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MQTT - The Standard for IoT Messaging