QUIC Version 1 is live on Cloudflare

This post announces the general availability of QUIC version 1 (RFC 9000) on Cloudflare, marking a significant milestone in the evolution of internet transport protocols. It details the technical aspects of enabling QUIC and HTTP/3, including the use of UDP, default security, faster handshakes, and the role of HTTP Alternative Services (Alt-Svc) for discovery. The post highlights Cloudflare's in-house open-source implementation, 'quiche', and its widespread adoption by other projects, underscoring Cloudflare's role in driving the standardization and deployment of this critical internet technology. It also provides insights into the current traffic share of QUIC/HTTP/3 and the tools used for testing and interoperability.