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title:: Tech / CDN - Geographically distributed group of servers which help **improve website load times** by distributing content closer to website visitors - While a CDN does not host content and can’t replace the need for proper web hosting, it does help **cache content** at the network edge, which improves website performance. Many websites struggle to have their performance needs met by traditional hosting services, which is why they opt for CDNs. - Thanks to their distributed nature, a CDN can **handle more traffic and withstand hardware failure** better than many origin servers. - A CDN may **improve security** by providing DDoS mitigation, improvements to security certificates, and other optimizations.