This post discusses Google's latest ranking update, the "Page Experience" update, which includes the addition of three perceptual speed metrics to the search engine's ranking algorithm, collectively referred to as "Core Web Vitals." These metrics measure the experience a page provides based on the time it takes to load and become interactive. The update aims to measure the experience a page provides and will roll out gradually through August 2021. Most e-commerce sites fail Core Web Vitals tests due to rich imagery, pop-ups, dynamic pricing, and real-time inventory lookups leading to slow pages and frustrating UX. Jamstack sites face extra challenges passing CWVs as Chrome UX report only measures their first loads. Proven techniques to optimize Jamstack e-commerce sites for 'good' LCP, FID, and CLS scores are shared, including optimizing largest contentful paint, first input delay, cumulative layout shift, and using static site generation. By combining these techniques with a best-of-breed Jamstack hosting provider like Netlify, the performance of your site visitors can be significantly improved. Google has integrated CWV data throughout its tools for analyzing site performance, allowing users to see page-level results as well origin results for any site on PageSpeed Insights and dive into their site's performance page by page with the CWV report in Search Console.