Google E.A.T. stands for Expertise, Authoritativeness, and Trustworthiness. It is a set of guidelines that Google suggests webmasters and content creators follow in order to produce high-quality content that is both useful and trustworthy. These guidelines are intended to help ensure that the content that appears in search results is reliable and relevant. E.A.T. is just one of many factors that Google considers when ranking websites and determining which search results to show for a given query.