Google Page Experience Update: Core Web Vitals and What Changed
The 2021 page experience update made Core Web Vitals a ranking signal. Google retired it as a named system in 2023, but the signals still count.
Local & Mobile
Google Mobile-Friendly Update 2015: What Mobilegeddon Really Did
On April 21, 2015, Google made mobile-friendliness a stronger ranking signal in mobile search. The named system is retired, but mobile usability still counts.