A content delivery network (CDN) is a geographically distributed network of servers that can cache content close to end users, allowing for faster and more efficient delivery of web content, such as images, videos, and streaming media. A CDN can also handle an increase in customer demand of resources, provide high-quality streaming media, and create a user-friendly interface by reducing latency and bandwidth consumption. A CDN can also improve the security and availability of the website by mitigating DDoS attacks and providing redundancy. Verified Reference:
https://www.cloudflare.com/learning/cdn/what-is-a-cdn/
https://learn.microsoft.com/en-us/azure/cdn/cdn-overview
https://en.wikipedia.org/wiki/Content_delivery_network