Every IoT project eventually reaches the same decision point:
Should the device communicate with the cloud over MQTT or HTTP?
Both protocols are mature, widely supported, and capable of moving device data reliably. The more useful question is not which protocol is better, but which communication model fits the device.
I have used MQTT for production edge clients running on deployed robot units and warehouse sensors. I have also used HTTP for a building-management monitoring backend and a smart-entry system built with Flask.
Both worked. They simply created very different systems.
