CDN
A network of servers that delivers content from the nearest location.
Definition
A Content Delivery Network copies your files — images, CSS, JavaScript — to servers around the world. When someone visits your site, they download from the server closest to them instead of one far away. This reduces load time and handles traffic spikes without overloading your origin server.
Example
A user in Tokyo loads your site. Instead of fetching files from a server in New York (200ms), the CDN serves them from a Tokyo edge server (20ms). The page loads ten times faster.
See it in context Learn how CDN fits into the bigger picture of how software actually works.
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