Google SEO
2014 — Search Quality Rater Guidelines
How did E-A-T enter Google's quality guidelines?
Expertise, Authoritativeness and Trustworthiness were formalized in Google's public Search Quality Rater Guidelines, alongside YMYL, or Your Money Your Life, for high-stakes topics.
Further analysis
Use this entry as an audit checkpoint. The cited source establishes the context; the direct answer identifies what to check before choosing an action.
In SFT, this topic relates to Trust. Check whether the signal is visible on the page, connected to the rest of the website and supported by understandable evidence.
Related search terms include E-A-T, quality raters, YMYL. Use them to describe the issue in a brief, audit or answer page.
Applying SFT
Trust requires observable evidence: sources, consistency, citations, identifiable authors and verifiable claims.