HTTP/3

HTTP/3 is the third major version of HTTP, built on QUIC (a UDP-based transport protocol) rather than TCP. It offers faster connection establishment, improved performance on lossy networks, and eliminates head-of-line blocking present in TCP-based HTTP/2. HTTP/3 encrypts all communication by default via TLS 1.3. Adoption is growing, with major CDNs and cloud providers supporting it.

Why it matters for your website

• 1Affects your HTTPS rating and SSL grade on security scanners
• 2Required for PCI-DSS and SOC 2 compliance
• 3Browsers block insecure connections and show warnings to users