A CDN is a network of servers delivering web content efficiently around different locations. Think of it as a global library of websites, spread across multiple locations. When a user visits a website, the CDN’s servers closest to them serve the content, reducing latency and improving load times. This is especially crucial for media-heavy content like videos and images, which can significantly impact user experience. CDNs reduce the strain on the website’s origin server, improving overall performance and reliability, by caching frequently accessed content on servers globally. This benefits users and helps website owners optimize their infrastructure and bandwidth costs.