HTTP/3 has been in development since at least 2016, while QUIC (the protocol beneath it) was first introduced by Google way back in 2013. Both are now...

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HTTP/3, built on the QUIC protocol, has seen remarkable uptake in browsers and CDNs but lacks comprehensive support in major programming languages and tools. Despite its benefits like improved resilience to unreliable networks, zero round-trip connection initialization, and reduced latency, the adoption is hindered by the slow integration in standard libraries and key open-source tools. This divide highlights a growing split between hyperscale infrastructure and the long-tail web, which remains dependent on fragmented open-source implementations.

HTTP/3 is everywhere but nowhere