Definition

CDN

A CDN, or Content Delivery Network, is a distributed set of servers that cache and serve a site's content from locations near each visitor. By shortening the distance data travels, a CDN cuts latency and improves load times and reliability.

Related terms

Latency

The delay between a request being sent and a response beginning.

TTFB

Time to First Byte: how long until the first byte of a response arrives.

Core Web Vitals

Google's set of metrics for loading, interactivity, and visual stability.

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