Edge delivery means your website is served from many locations around the world at once, rather than from one central data center. Every visitor is handed the copy that's nearest to them. That's the whole idea behind a global network — and once you see it, a lot of other hosting concepts (CDNs, availability, speed) turn out to be different views of the same thing.
The "edge" is simply the location closest to your visitor. Global edge delivery means there's an edge near almost everyone — so almost everyone is served locally.
What "the edge" means
In networking, the edge is the outermost layer — the locations closest to actual people, as opposed to a central core far away. An edge location (also called a point of presence) is one of the many places a network keeps a copy of your site and answers requests from. "Serving from the edge" just means answering a visitor from the location nearest to them instead of from one distant machine.
One publish, distributed everywhere
You publish your site once. The network takes that copy and distributes it across its locations, so it's ready to serve wherever a visitor turns up. From then on there's no "main" location that everyone depends on — there are many locations, each able to answer on its own. The animation shows both movements: your one publish fanning out to the edges, then visitors around the world each pulling from the nearest one.
How a request finds the nearest edge: anycast
There's a neat trick that makes this work without you configuring anything, called anycast. Normally one address points to one machine. With anycast, the same address is announced from many locations at once, and the network naturally delivers each request to whichever location is nearest along the shortest available path. Your visitor just opens your site; anycast quietly routes them to the closest edge — and, if that one's unavailable, to the next.
Why edge delivery is the foundation for everything else
- Speed. Serving from a nearby edge is the biggest factor in how fast a site feels — distance is the hidden speed limit, and the edge removes most of it.
- Availability. Many independent edges mean no single machine whose failure takes the site offline; if one is unreachable, traffic reroutes to the next — see uptime and availability.
- Scale. A traffic spike is spread across many locations instead of landing on one server.
- Security. Because requests pass through the edge first, the network can help filter malicious traffic before it reaches your site.
Edge delivery, CDNs, and hosting — one picture
These aren't really separate products. A CDN is a network of edge locations. Edge delivery is what that network does. And modern web hosting increasingly is that network — storing your site and serving it from the edge, rather than parking it on one server with a delivery layer bolted in front. When you understand edge delivery, you understand all three.
How this works on Just Web Hosting
Just Web Hosting is a global edge network spanning 330+ cities across 125+ countries. Publish a site with Just Publish and it's distributed across those locations the moment it goes live — every visitor served from the nearest edge, over automatic HTTPS, with anycast routing and failover handled for you. Global by default, with nothing to switch on.
Global by default, with nothing to switch on.
Just Publish distributes your site across 330+ cities — every visitor served from the nearest edge, automatically.