Open4Tech Cloud is a simple project that visualises data sent by devices using MQTT. The main purpose is to help developers use their devices, and easily test and develop MQTT devices.
A small part of the team creates this platform. This is difficult for development and the progress will be slow. More about limitations and pricing you can find here.
The architecture is simple. You have an MQTT broker, which sends data to the server and stores it in the database. More about architecture you can find here.
Using a server is simple – registering, getting your token, and sending data to the Open4Tech Cloud platform.