How does the Cloudflare CDN work?
A content delivery network (CDN) is a large distributed system of servers installed in multiple data centers around the world. The content of a website that uses such a network is distributed across the web instead of being served only by the single server where it has been originally uploaded.
In such a case if your website that is hosted on a server in the US, gets visited by someone in Australia, will still load very fast. The site’s content will be served from the nearest Cloudflare data center.