A Content Delivery Network (CDN) is a distributed network of servers that delivers web content to users based on their geographical location. CDNs reduce latency and enhance loading speeds by caching content closer to end-users. The benefits of this include improved site performance, increased availability and reliability during high traffic events, and enhanced security against DDoS attacks. By optimizing the delivery of static and dynamic content, CDNs significantly improve user experiences, making them essential for websites and applications that serve global audiences.