Bandwidth and processing power are limiting factors. Our department tried to run a large Big Blue Button instance to support a dozen of conferences at the same

Bandwidth and processing power are limiting factors. Our department tried to run a large Big Blue Button instance to support a dozen of conferences at the same time, ranging from 10-150 participants, all day long. The experience says: you need hardware (not virtual), starting from 32 cores and 64GB RAM, it turned out it was not enough, added another machine, then another machine, ... and more. I can't give more details.