Sentry is helping developers improve front-end performance by standardizing the measurement of user experiences through Google Web Vitals, which quantify specific milestones measured when a user navigates to a page. This includes First Paint (FP), measuring the time the first pixel takes to appear in the viewport; First Contentful Paint (FCP), measuring the amount of time the first content takes to render in the viewport; Largest Contentful Paint (LCP), measuring the render time for the largest content to appear in the viewport; First Input Delay (FID), measuring the response time when a user tries to interact with the viewport; and Cumulative Layout Shift (CLS), measuring the sum of individual layout shift scores for every unexpected element shift during the rendering process. Sentry gathers aggregate field data on what users actually experience when they engage with an application, providing context on variable network speed, browser, device, region, and more, to help developers understand what's happening in the wild, how frequently it's happening, why, and what else is connected to the behavior.