https://vo.rs/tags/mqtt/Mqtt - Tag - vo.rsHugo -- gohugo.ioenThis work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.Mon, 11 May 2026 14:00:00 +0000https://vo.rs/story/mqtt-essentials-the-protocol-behind-every-smart-home/<p>If you&rsquo;ve spent any time poking at a smart home, you&rsquo;ve bumped into MQTT whether you meant to or not. Zigbee2MQTT, ESPHome, Tasmota, Home Assistant&rsquo;s own internal bus — they all lean on it. It&rsquo;s worth understanding properly, because once you do, an awful lot of &ldquo;magic&rdquo; stops being magic and starts being a handful of topics and a tiny broker process.</p> <h2 id="what-it-actually-is" class="headerLink"> <a href="#what-it-actually-is" class="header-mark"></a>11 What it actually is</h2><p>MQTT is a publish/subscribe messaging protocol. It was designed in 1999 for oil pipeline telemetry over satellite links, which tells you everything about its priorities: tiny payloads, low overhead, and tolerance for flaky connections. Devices don&rsquo;t talk to each other directly. They talk to a <strong>broker</strong> — a small server that receives messages and fans them out to whoever has subscribed.</p>Mon, 11 May 2026 14:00:00 +0000