The primary purpose of search engines is to have the most correct answer if someone enters a question in the search bar. For Google, the means to this end is constant algorithm updates. To rate websites, Google rolls out a new set of rules or guidelines every so often, so that website owners can, in turn, come up with content that gives users the best search experience.
One of those improvements to the algorithm included instructions for something Google calls E-A-T, which you may have heard of before if you were interested in the industry. While this is not an unknown concept in digital marketing, Google 's theory of optimization for the EAT requirements has never been more critical than ever in helping you outperform other websites for search results.
infographic by: www.spiralytics.com