Edge device that is communicating with web clients on a network would be my guess. People use WebRTC (mainly the Go library though) to create Remote Desktop implementations. Ex: https://github.com/imtiyazs/webrtc-remote-desktop
Interesting, I hadn't thought of that. As a a developer about to use the Pi at the edge, I can see how this would be helpful with delivering footage from the IoT devices.
I'm not sure I understand or would use AWS as the hub though, I would probably build my own server hub.