The three Web Vitals that actually move revenue

Google publishes Core Web Vitals. Every SEO audit cites them. But if you dig into real e-commerce data, only two of the three correlate tightly with conversion.

LCP matters because it's the moment the user can read and tap. CLS matters because layout shifts break mobile taps and frustrate checkout. INP matters because slow interactions feel broken.

FCP and TTFB show up on dashboards but rarely drive dollars. Optimize the first three relentlessly, and stop stressing the rest.