Dive into the world of HTTP headers with this comprehensive 46-minute conference talk by Andrew Betts at performance.now() 2018. Explore a wide range of topics including Clear Site Data, HTTP Archive, CSP, Strict Transport Security, Referral Policy, and more. Learn about client hints, preloading, early hints, and server timing. Discover how to leverage JavaScript and Feature Policy for enhanced performance. Gain insights into HTTP header compression and adoption trends. Access accompanying slides for visual reference and connect with the speaker via Twitter for further discussions.