To optimize your website or web application, Cloudflare provides DNS and CDN services, so we can reverse proxy the web traffic to and from your domain.| Cloudflare Docs
Cloudflare has several IP address ranges which are shared by all proxied hostnames.| Cloudflare Docs
Cloudflare respects the origin web server’s cache headers in the following order unless an Edge Cache TTL cache rule overrides the headers. Refer to the Edge TTL section for details on default TTL behavior.| Cloudflare Docs