CDN (Content Delivery Network) is a distributed network of servers located around the world that delivers web content to users with minimal latency.
The Problem CDN Solves
Imagine your favorite website is physically hosted on a server in San Francisco. You open it from Kyiv, and your request travels ~9,000 km each way. Even at the speed of light, that’s ~60–90 ms just for the physical signal propagation, and real-world latency, including routing and processing, easily reaches 200–300 ms.
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