https://www.hivemq.com/mqtt/
MQTT Essentials - All The Core Concepts & Basics Explained
MQTT Essentials: Learn the core concepts and basics of MQTT, what it is, its features, and other essential information about the protocol for IoT and IIoT.
mqtt essentialsall thecore conceptsbasicsexplained
https://www.hivemq.com/mqtt/mqtt-5/
MQTT 5 Essentials | Advanced MQTT for IoT Communication | HiveMQ
Take a technical deep-dive into to MQTT 5. Unlock advanced IoT communication with MQTT 5. Explore MQTT essentials and elevate your IoT projects.
for iotmqttessentialsadvancedcommunication
https://www.hivemq.com/mqtt/unified-namespace-uns-essentials-iiot-industry-40/
Learn Unified Namespace (UNS) Essentials for IIoT with MQTT
Get a quick introduction to Unified Namespace (UNS), what it is, and why it matters to Industrial IoT (IIoT) and Industry 4.0 projects. Learn to build UNS here.
unified namespaceuns essentialslearniiotmqtt
https://www.hivemq.com/blog/mqtt5-essentials-part2-foundational-changes-in-the-protocol/
MQTT 5 Vs. MQTT 3 – MQTT 5 Essentials Part 2
MQTT 5 Vs. MQTT 3 – Discover what differentiates MQTT 5 from MQTT 3.1.1
mqttvsessentialspart