E-E-A-T

It appears in the Search Quality Rater Guidelines, the document Google gives the people who evaluate its results. It is not a score in the algorithm; it describes what the algorithm is trying to approximate.

The first E, Experience, was added in December 2022 and is the one most sites can actually act on. It asks whether the author has first-hand experience of the subject: has this person used the product, visited the place, run the campaign.

It weighs heaviest on what Google calls Your Money or Your Life topics, where bad information causes real harm. For most commercial sites the practical version is: name your authors, show your work, cite your sources, and keep your claims checkable.