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A set of metrics that measure the performance of the page related to user experience. Core Web Vitals were introduced alongside the Page Experience update as the main signals that indicate a good user experience:

Largest Contentful Paint (LCP) – loading performance.
First Input Delay (FID) – interactivity.
Cumulative Layout Shift (CLS) – visual stability.

Google did confirm Core Web Vitals as a ranking factor but said that relevance and other factors may be more important.

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