Content Delivery Networks Explained

Content Delivery Networks Explained A content delivery network, or CDN, is a group of servers placed around the world to deliver web content faster. When a visitor requests a page, the CDN tries to serve it from a nearby edge node. If the content isn’t cached locally, the edge server fetches it from the origin (your main server) and stores a copy for next time. This reduces travel distance, lowers the chance of a hotspot, and helps sites handle sudden traffic spikes more smoothly. CDNs are used by everything from small blogs to large streaming services. ...

September 22, 2025 · 3 min · 516 words