What exactly is HTTP/3? Why was it needed so soon after HTTP/2 (which was only finalized in 2015)? How can or should you use it? And especially, how does this improve web performance? Let’s find out.

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After almost five years in development, the new HTTP/3 protocol is nearing its final form. So what exactly is it? Why was it needed so soon after HTTP/2? How can or should you use it? And especially, how does it improve web performance? Let’s find out.

3 From A To Z: Core Concepts (Part 1) — Smashing Magazine