HTTP/3 has been in development since at least 2016, while QUIC (the protocol beneath it) was first introduced by Google way back in 2013. Both are now standardized, supported in 95% of users' browsersopens in a new tab, already used in 32% of HTTP requests to Cloudflareopens in a new tab, and support is advertised by 35% of websitesopens in a new tab (through alt-svc or DNS) in the HTTP Archive dataset. We've developed a totally new version of HTTP, and we're on track to migrate more than 1/3 of...