What is a CDN?

A CDN is a network of servers in many locations that each hold a copy of your file. When someone opens your link, they are served from the server closest to them rather than from one machine in a single city. Distance is latency, so shaving thousands of miles off the trip is the difference between a page that appears at once and one that hangs for a beat. The same copies also absorb sudden spikes, so a link that gets shared widely does not buckle.

NudgeHost serves files through a CDN in front of its storage, which is why a hosted page feels quick whether the visitor is next door or on another continent. This pairs naturally with browser and CDN caching, since the CDN holds the cached copy that makes repeat visits instant. For image-heavy pages the effect is most obvious, so when you put an image online the picture loads from the edge rather than the origin every time.

On the free plan your files already ride this network, and a paid plan keeps that true at higher limits when you move to a paid tier. You never configure any of it. There is no region to pick and no cache to warm by hand. The point of a CDN for someone sharing a file is simply that they never have to think about it.