CDN
A CDN is a worldwide network of servers that keeps copies of your site’s files close to your visitors, so pages load fast no matter where someone is.
In plain English
Your site lives on one server, in one city. Without a CDN, a visitor in Sydney waits while every image travels from Amsterdam and back.
A CDN keeps cached copies of those files in dozens of locations around the world. Sydney gets served from Sydney. Same file, a fraction of the distance.
Why it matters
Speed isn’t a vanity metric. It changes how many people wait for your page to appear, how Google ranks it, and how the site feels to use.
Distance is one of the very few speed problems you cannot code your way out of. You solve it by moving the files closer.
How it works
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Your domain points at the CDNTraffic arrives at the network first, not at your server.
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The CDN asks your server onceIt fetches a file, then stores a copy at the edge.
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Everyone after that is served locallyFrom the nearest edge location, in milliseconds.
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The cache expires and refreshesSo visitors never get stale files forever.
A CDN speeds up delivery, not your site
It won’t fix a slow server, bloated builder output, or a 4 MB hero image. Fix those first, then add the CDN and enjoy the compounding.