Question 1

Why does my WebRTC app have good call quality in one region but terrible quality in another?

Accepted Answer

Regional call quality differences are usually caused by relay distance and routing behavior. If users are allocating to TURN servers outside their geography, media travels farther, increasing round-trip time and jitter. Uneven regional capacity, DNS-only routing, or cross-region hair pinning can also create inconsistent performance even when the core application remains unchanged.

Question 2

How much does geo-distributed TURN infrastructure cost to run at scale?

Accepted Answer

Cost primarily depends on bandwidth consumption, relay ratio, and cloud egress pricing. Because TURN relays traffic bidirectionally, every active session doubles bandwidth usage at the server level. At scale, video traffic can push regional throughput into multi-gigabit ranges. Geo-distribution reduces inter-region egress costs by localizing traffic, but infrastructure must be sized for peak relay scenarios to avoid reactive scaling and performance degradation.

Question 3

What percentage of WebRTC traffic typically goes through TURN?

Accepted Answer

It varies by audience and network conditions, but in enterprise or mobile-heavy environments, a significant portion of sessions may rely on TURN due to restrictive NATs and firewalls. Assuming low relay usage in capacity planning is risky; production traffic often exceeds initial expectations.

Question 4

Is UDP-only deployment sufficient for TURN servers?

Accepted Answer

No. While UDP is preferred for performance, many enterprise networks force TCP or TLS relay. A production-ready TURN infrastructure for WebRTC must account for mixed transport behavior and the additional CPU overhead associated with encrypted relay traffic.

Question 5

Can a single-region TURN deployment support global users?

Accepted Answer

It may function initially, but latency, cross-region routing, and rising egress costs typically surface as user distribution expands. Geo-distributed TURN server WebRTC deployments are necessary to maintain consistent performance and cost efficiency across geographies.

Geo-Distributed TURN Infrastructure for WebRTC

Designing Geo-Distributed TURN Infrastructure for WebRTC at Scale