CDN stands for Content Delivery Network. It is a distributed network of servers that delivers web content and media to users based on their geographical location. The primary role of a CDN is to improve load times, enhance user experience, and reduce latency by caching content closer to the end user. CDNs also help alleviate stress on the origin server, optimizing bandwidth and maintaining site performance during high traffic periods. By using a CDN, businesses can ensure faster access to their websites and services, ultimately increasing user satisfaction and engagement.