[rstuart4133]

Any scale where you get good utilisation of the metal. You can rent a dedicated 8 core server for $100/mo or so, 1Gbps unlimited usage. If you use it at full throttle it is literally under 1/10'th the price, often under 100'th of the amount you will pay for a cloud host and the thousand little cost addon's.

But the trick is you have to actually use it and need it in real time. An AWS instance costs you nothing if you don't use it, and almost nothing if you let them kill it at their whim.

Zoom's strategy looks pretty optimal to me. Take the 100 fold price reduction on your predicable load, farm the rest out to the lowest bidder.