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Definition [CDN]

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CDN



A content delivery network (CDN) is a system of distributed cache servers (network) that deliver webpages and other Web content to a user based on the geographic locations of the user, the origin of the webpage, and a content delivery server. The goal of a CDN is to serve content to end-users with high availability and high performance. CDNs serve a large fraction of the Internet content today, including web objects (text, graphics and scripts), downloadable objects (media files, software, documents), applications (e-commerce, portals), live streaming media, on-demand streaming media, and social networks.