The Stadiums for Qatar 2022, were built with advanced technology. Under the seats, sensors were placed to measure and regulate the ambient temperature. As soon as an "excess" temperature limit is detected, conditioned air is ducted to quench the extreme heat. This is considered an IoT Project, where the Maintenance Director monitors on a Dashboard, the temperature of all the Stadiums, since a Relational DB is managed in the cloud (in a Client/Server environment).

Make a Diagram with the IoT Architecture of connection and interaction of all the  elements, including those specified in the previous description.