A content delivery network (CDN) is a network of servers strategically located around the world to deliver web content quickly and efficiently to users. By caching and storing content on these servers, CDNs help reduce latency and improve website performance. This results in faster loading times, improved user experience, and higher search engine rankings. CDNs also help distribute traffic evenly across servers, reducing the risk of downtime during high traffic spikes. Overall, utilizing a CDN can greatly benefit websites by improving speed, reliability, and overall performance, making it a valuable tool for any online business.