What Is a CDN and How Does It Work?
Learn how a CDN speeds up websites, reduces origin server load, and improves resilience by serving content from edge locations closer to users.
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Definition
A CDN is a geographically distributed group of servers that caches content close to end users for faster and more reliable delivery.
Why it matters
It matters when load times, availability under traffic spikes, bandwidth costs, and edge-layer security are business-critical.
In this archive
In this archive CDN topics appear in caching policy, origin offload, edge routing, and performance-security tradeoffs. It currently appears across 1 category, mainly Infrastructure & DevOps.
Often appears with
Learn how a CDN speeds up websites, reduces origin server load, and improves resilience by serving content from edge locations closer to users.