A Content Delivery Network (CDN) significantly improves website performance by distributing content across multiple geographically dispersed servers. This infrastructure reduces latency and load times by caching site resources closer to users, allowing faster access. When a user requests content, the CDN serves it from the nearest server, reducing network congestion and improving the overall user experience. CDNs also enhance scalability, as they can handle traffic spikes more effectively. Furthermore, they often provide additional benefits like security features and DDoS protection, ensuring consistent and reliable web performance.