CLS
CLS is Cumulative Layout Shift, a web performance metric that quantifies unexpected layout shifts during loading, impacting user experience.
FID
First Input Delay (FID) gauges user interactivity by measuring the time from a user's first interaction with a page to the browser's response.
LCP
LCP is Largest Contentful Paint, a crucial web performance metric that measures how fast the main content loads on a webpage.