The broadcast leaves from the datacenter, not your Wi-Fi

You're presenting to sixty people from a hotel room with two bars of Wi-Fi. The deck, the demo, the browser: all of it runs on your container's desktop, driven through the display client in a tab. On the container, ffmpeg captures the screen and sends it to a pipe path; sixty viewers hold the ?video URL.

The broadcast never crosses the hotel network. Your connection carries clicks, keystrokes, and one modest view of your own desktop. The datacenter's uplink carries the sixty copies: one encode, fanned out in lockstep.

Presenting used to mean praying the venue's network could carry a screenshare to everyone. Now it only has to carry a remote control.