How Core Web Vitals & Lighthouse scores affect SEO Rankings

What this post added

This post clarifies the distinction between Core Web Vitals (field data) and Lighthouse scores (lab data) in the context of Google's SEO ranking. It emphasizes that only field data (LCP, INP, CLS) influences search rankings, while Lighthouse scores serve as diagnostic tools. The post details the methodology behind Chrome User Experience Report (CrUX) data collection, including user eligibility and the 28-day sliding window for scoring. It also addresses the geographical distribution of users and the impact of device performance on field data. Finally, it reiterates Vercel's capability to improve these metrics through its platform and Next.js.