Cloudflare Calls: millions of cascading trees all the way down

Cloudflare announces the open beta of Cloudflare Calls, a globally anycasted WebRTC SFU and TURN service that enables real-time audio/video apps without custom SDKs, using HTTP for offer/answer and automatically routing clients to the nearest data center. The post explains how Calls unbundles WebRTC (ICE/STUN/DTLS) across its network while achieving ~100–250 ms setup via consensus and DTLS-based optimizations for Chrome, scales media with per-track fan-out trees instead of rooms, performs NACK handling at the edge to improve loss recovery, and provides TURN over multiple ports on anycast. It also covers pricing (first 1 TB free, then $0.05/GB), introduces the open-sourced Orange Meets reference app, and previews upcoming features like simulcast.