Twilio has announced the launch of its Network Traversal Service (NTS), which provides low-latency, cost-effective, and reliable STUN and TURN capabilities for WebRTC and other communication platform developers. The service allows developers to define their own signaling solution without having to build out a global network traversal service for media relay, addressing challenges such as how to get media around firewalls and NATs. NTS uses STUN servers to perform basic signaling assistance, which is sufficient in most situations, but also includes TURN servers to handle symmetric NAT configurations that require relayed media, with the intelligent detection of geographically closest relay points to minimize latency. The service is deployed globally across five continents and offers a cost-effective alternative to building such a solution in-house, with pricing based on per gigabyte of relayed media.