I too have no idea what OP means by saying it's "available through Cloudflare"
$ dig +noall +answer A news.ycombinator.com
news.ycombinator.com. 0 IN A 50.112.136.166
$ nslookup 50.112.136.166
166.136.112.50.in-addr.arpa name = ec2-50-112-136-166.us-west-2.compute.amazonaws.com.
Re:Tell HN: HN Moved from M5 to AWS
by 1vuio0pswjnm7 on Saturday July 09, 2022 @05:20AM
(#32033321)
drill news.ycombinator.com @108.162.192.195
Those are CF IP addresses. Before HN switched from M5 to AWS, CF was an alternative way to access HN. echo|openssl s_client -connect 50.112.136.166:443 -tls1_3> > Little known fact: HN is also available through Cloudflare. ...
> What does that mean? How do you access HN through CloudFlare ...
As written, it seems to suggest HN is in the Cloudflare cache. But, I don't think there's a way to access the cached version if a site's not down. I wasn't around during today's outage, so I can't speak to whether a generic Cloudflare cached version of HN was available during the downtime.
What does that mean? How do you access HN through CloudFlare and what do you mean by AWS not supporting TLS1.3? You can certainly run any https server on EC2, including one that supports TLS1.3.