Having about 3 meetings created per day on average since launch would not qualify this app as a success by any count. For this amount of usage, a shared account on a cheap web hosting service would probably do. Most probably any 32 bit item in my interesting computer collection (if I had any Windows boxes, that is) would be able to carry that load without breaking a sweat.
However, one could not be able to base a startup on this structure, much less a successful one.