HTTP vs HTTPS
3.89 secs vs. 0.39
HTTP: 10 times slower than HTTPS with HTTP2
HTTP/2 is supported only with latest web servers, but with "reverse proxy / CDN" service any web site can have it. CloudFlare is one such service with free option.
with 115 data centers across the world, 10 Tbps
Our Plans | Cloudflare
New – HTTP/2 Support for Amazon CloudFront | AWS Blog
Journey to HTTP/2 · @kamranahmedse
book chapter: HTTP: HTTP/2 - High Performance Browser Networking (O'Reilly)
http2 explained - The HTTP/2 book