What each letter means

Experience. The author has genuine hands-on experience of the subject. A running-shoe review
from someone who has covered 500 km in them is worth more than a technical write-up assembled from
catalogue specifications.

Expertise. The author holds knowledge and qualifications in the field. In medicine that means a
doctor. In finance, a certified specialist. In e-commerce and marketing, a professional with a
track record that can be verified.

Authoritativeness. How far the author or the site is recognised as an authority in the niche —
by other sites, by publications, by the professional community. It is measured through the link
profile, brand mentions and awards.

Trust. The most important component, in Google’s own words. Transparency: who the author is,
who stands behind the site, how to reach you, whether there is a returns policy, how safe the
transaction is.

YMYL and E-E-A-T

YMYL, Your Money or Your Life, covers topics where poor content can cause real harm: health,
finance, safety, legal questions. Google applies an especially strict E-E-A-T assessment to them.

In e-commerce the transactional pages — purchase, payment, personal data — fall under YMYL. That
means a privacy policy, an SSL certificate, clear purchase terms and real company contact details
are not only legal requirements but ranking factors too.

E-E-A-T component Signals for e-commerce
Experience Verified customer reviews, user-generated content with real photos
Expertise Detailed product descriptions, an expert blog in the niche
Authoritativeness Press mentions, brand partnerships, awards
Trust HTTPS, returns policy, company details, Schema.org

E-E-A-T and AI search engines

As Google AI Overviews, Perplexity and other generative engines have grown, E-E-A-T has taken on a
new dimension: citability in AI answers. These systems prefer to reference sources that:

  • Are recognised as authoritative in their niche (strong backlinks)
  • Carry structured data (Schema.org) that makes the context machine-readable
  • Show original experience and research rather than a rewrite of someone else’s material

Tip: for an e-commerce blog, concrete data from your own A/B tests or customer analytics is
the strongest possible Experience signal. “We tested X and got result Y” beats any general
overview of the topic.

Practical steps to raise E-E-A-T

  • Add an About page with a real history, the team and contact details
  • Use Schema.org markup for the organisation, the article author and reviews
  • Publish content with a named author and their credentials
  • Collect verified customer reviews on product pages
  • Work on brand mentions in trade media and industry publications