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.
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.