Expertise, Authority, and Trust, or better known as E-A-T is now a famous standard that SEOs try to follow. Two of the biggest algorithm updates from the past year gave more attention to E-A-T, the Medic Update on August 2018 and the Google June Broad Core Update on June 2019.
Many of the websites that were hit were said to have low E-A-T. When asked how can they recover, you’ll probably get the same answer from experts and even from Google’s Search Liaison Danny Sullivan over and over again.