Understanding Content Delivery Networks: How CDNs Speed Up the Web

A content delivery network (CDN) is a system of distributed servers that work together to deliver web content—such as images, videos, and HTML pages—to users based on their geographic location. The primary goal of a CDN is to reduce latency and improve website loading times by caching content on multiple servers around the world. When a user requests a resource, the CDN routes the request to the nearest server, minimizing the distance data must travel. This not only accelerates page loads but also reduces bandwidth costs and enhances reliability by handling traffic spikes. CDNs are essential for modern websites that serve global audiences, providing a smoother user experience and better performance.