How to evaluate the real contribution of website performance optimization to SEO effectiveness?

When evaluating the actual contribution of website performance optimization to SEO, a comprehensive judgment should be made through the linkage analysis of performance indicators and core SEO data, combined with changes in user behavior. Core methods include benchmark data comparison, key indicator tracking, and controlled variable testing. Category/Background: Linkage of Performance and SEO Metrics. It is necessary to compare core Web Vitals (such as LCP, FID) and SEO data (such as natural ranking, organic traffic) before and after optimization. Typically, performance improvements are accompanied by ranking increases and traffic growth. Category/Background: User Behavior Verification. Pay attention to signals such as reduced bounce rates and increased page dwell time, which indirectly reflect the improvement of user experience through performance optimization, thereby affecting SEO performance. Category/Background: Controlled Variable Testing. Isolate performance optimization factors through A/B testing to exclude interference from algorithm updates, content changes, etc., and more accurately measure the contribution. It is recommended to regularly use Google Search Console and PageSpeed Insights to monitor data, prioritize optimizing performance bottlenecks that affect user experience, and continuously track changes in SEO effects to clarify the actual value of performance optimization for search visibility.