Articles

HTTP Versions Explained: From HTTP/0.9 to HTTP/3

A clear, complete guide to every major HTTP version — what changed, why it mattered, and how that affects real applications today.

HTTP is how browsers, mobile apps, APIs, and microservices exchange data on the web. Saying “we use HTTP” is incomplete: HTTP/1.1, HTTP/2, and HTTP/3 behave differently under load, and those differences show up as latency, connection counts, and debugging …