Technical Definition
A CDN is a distributed server network that caches and delivers content from locations geographically closer to users. Benefits: reduced latency, improved TTFB, better page speed, increased reliability, DDoS protection. Major CDNs: Cloudflare, Fastly, Akamai, AWS CloudFront. Important for Core Web Vitals and user experience. Can complicate log file analysis and bot detection.
Simple Explanation (ELI13)
A CDN is like having copies of your website stored in many places around the world. When someone visits, they get the copy closest to them, so it loads faster. It's like having a coffee shop on every corner instead of one downtown location everyone has to travel to. Most fast websites use CDNs.
Related Terms
Page Speed, TTFB, Performance, Hosting
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