Definition

Core Web Vitals

Core Web Vitals are a set of Google metrics that measure real-world user experience: loading performance (LCP), interactivity (INP), and visual stability (CLS). They are part of the page-experience ranking signals, so poor scores can affect rankings.

Related terms

TTFB

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

Latency

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

CDN

A network of servers that caches content close to users for speed.

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