A Content Delivery Network (CDN) is a geographically distributed group of servers optimized to deliver internet content quickly by minimizing the distance between the server and the user. CDNs store a cached version of content in multiple locations to ensure efficient delivery of webpages, videos, images, and other online content to users worldwide. This reduces latency, improves site load times, and enhances user experience. CDNs also offer protection against large-scale traffic attacks, ensuring website availability and security. By leveraging a CDN, websites can achieve greater scalability and reliability, accommodating spikes in traffic and reducing bandwidth costs. An example of a popular CDN is [[Cloudflare]]. **Declaration:** This content is [[human-made and ai-assisted]].