At peak, 50 million participants are in concurrent meetings averaging 10 participants each. Each participant uploads 2 Mbps to the media servers and downloads every other participant's stream: 9 × 2 Mbps = 18 Mbps down.
Bandwidth: 1 Mbps = 10^6 bits/sec, 1 Gbps = 10^9 bits/sec, 1 Tbps = 10^12 bits/sec, 8 bits = 1 byte.
Compute upload, download, and combined server bandwidth.