HTTP/2

HTTP/2 is the second major version of the HTTP network protocol, designed to improve performance over its predecessor HTTP/1.1. Key features include multiplexing (sending multiple requests and responses simultaneously over a single connection), header compression, and server push, all of which reduce page load latency significantly.

From an SEO perspective, HTTP/2 benefits Core Web Vitals metrics by reducing connection overhead and enabling browsers to load assets more efficiently in parallel. Most modern web servers and CDNs support HTTP/2 by default, but it requires an HTTPS connection to function in browsers. Migrating from HTTP/1.1 to HTTP/2 often yields measurable improvements in TTFB and overall page load speed without any changes to page content.