> The book says 7% of all internet traffic already uses QUIC (HTTP/3)
The way I have understood, the book says that what is now in use (these 7%) is a "Google-only-QUIC" whereas the "standardized HTTP/3" is still used... nowhere?
The IETF QUIC remains a work in progress, perhaps to be published in 2019. HTTP/3 is an application layer on top of (IETF) QUIC, it might also be published in 2019 or later. There are implementations of current drafts, and the rough shape is settled but they're a long way from being truly set in stone and aren't in anything ordinary people use.
So unsurprisingly nobody is already doing a thing that isn't even standardised yet, but people are, as you see, writing about it.
Therefore I believe I'm right that claiming that HTTP/3 is used at all is wrong, and that 7% is not even the same QUIC that will be used with HTTP/3. So " already uses QUIC (HTTP/3)" is a wrong statement, the right can be only "GQUIC is used at the moment", also, as far as I understood, "making according to Google the 7% of the traffic" (and not on 7% of the sites as claimed). And HTTP/3 and the matching IETF QUIC are used nowhere. So, again
"> The book says 7% of all internet traffic already uses QUIC (HTTP/3)"
was wrong: the book doesn't say that, and that what is claimed that the book says (even if it doesn't) is false in more aspects.
The way I have understood, the book says that what is now in use (these 7%) is a "Google-only-QUIC" whereas the "standardized HTTP/3" is still used... nowhere?