Cloudflare introduces zero round trip time resumption (0-RTT) for its free service, which significantly speeds up HTTPS connections and improves web experience for users visiting sites regularly. This feature is now enabled by default for all sites on Cloudflare's free service and can be enabled in the Crypto app in the Cloudflare dashboard for paid customers. 0-RTT dramatically speeds up resumed connections, reducing latency and enhancing performance, especially noticeable on mobile networks.