MQTT is a lightweight messaging protocol widely used in #IoT systems. It was originally designed for monitoring oil pipelines over low-bandwidth, unreliable satellite links. Check out my latest blog post and video if you want to learn more about #MQTT!
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https://shawnhymel.com/3046/what-is-mqtt-an-introduction-to-the-lightweight-iot-messaging-protocol/?utm_source=mastodon&utm_medium=social&utm_campaign=esp32_iot_course_evergreen