CDN (Content Delivery Network)
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A CDN is a distributed network of servers that delivers web content from locations geographically close to the user. CDNs are configured via [[cname-record|CNAME records]] or [[a-record|A records]] that point to the CDN's edge servers instead of the origin.
Example
Cloudflare CDN caches your website across 300+ cities. A CNAME record pointing your domain to Cloudflare's network enables the CDN.