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The second paragraph opens up with a “what is quic” and links to another post. Perhaps give that a read?

You can read about IETF QUIC here https://datatracker.ietf.org/doc/draft-ietf-quic-transport/

HTTP over QUIC is now HTTP/3. "HTTP/3 is just a new HTTP syntax that works on IETF QUIC, a UDP-based multiplexed and secure transport"

QUIC is likely to be implemented first by large internet service providers (Google (who made it), Amazon, Cloudflare, etc.) and there slowly come to all the various open source projects and various software installed on every computer.

Just having the major internet services and browsers implementing it already makes a sizable difference.

A crude, TL;DR is that QUIC is just TCP over UDP.

That’s all I wanted lol thanks