A Content Delivery Network (CDN) is a system of geographically distributed servers that deliver digital content—such as websites, images, or videos—quickly and reliably to users. By distributing data across multiple nodes, CDNs reduce loading times and increase reliability. They ease the load on central servers, enhance performance, and improve the user experience, especially for global applications. CDNs are a crucial part of modern web infrastructure, contributing significantly to the efficiency and scalability of digital services.