Evolution of HTTP: From 0.9 to HTTP/3

This article traces the development of the HTTP protocol from its simple single‑line origins in HTTP/0.9 through the extensible HTTP/1.0 and standardized HTTP/1.1 versions, to the performance‑focused HTTP/2 and the QUIC‑based HTTP/3, highlighting key features, limitations, and architectural changes.

HTTPInternetProtocol Evolution

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Full-Stack Internet Architecture

Nov 2, 2021 · Fundamentals

Evolution of HTTP: From 0.9 to HTTP/3 and Its Key Features

This article explains the historical development of the HTTP protocol—from the simple HTTP/0.9 version through HTTP/1.0, 1.1, the binary‑based HTTP/2, and the emerging HTTP/3—highlighting each version's features, limitations, and the motivations behind their upgrades.

HTTPHTTP/2HTTP/3

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Evolution of HTTP: From 0.9 to HTTP/3 and Its Key Features