How Core Web Vitals affect SEO

Google's page experience ranking system evaluates the performance of websites based on Core Web Vitals metrics. These metrics measure how users interact with a website and provide insights into user experience, conversion rates, and search engine rankings. Adopting Next.js or Vercel's managed infrastructure can improve Core Web Vitals scores. Google collects field data by observing real users interacting with the site, which is distinct from lab data provided by Lighthouse tests. The 28-day sliding window used in field data means that changes may not be immediately reflected in search rankings. To maximize iteration velocity, Vercel's Speed Insights offers real-time, easily filterable access to Core Web Vitals data, allowing developers to quickly identify and fix issues affecting site performance and user experience.