Earlier this year, the Chrome team announced the Web Vitals initiative to provide unified guidance, metrics, and tools to help developers deliver great user experiences on the web. The Google Search team also recently announced that they will be evaluating page experience as a ranking criteria, and will include Core Web Vitals metrics as its foundation. The three pillars of 2020 Core Web Vitals are loading, interactivity, and visual stability of page content, which are captured by the following metrics:

https://www.smashingmagazine.com/2020/07/web-dev-live-google-event-2020/