Expertise (E-E-A-T)
Expertise, as a component of E-E-A-T, refers to the depth of knowledge and skill demonstrated by the content creator on the subject they are writing about. Google's Quality Raters assess whether the main content of a page was created by someone with sufficient subject-matter knowledge to be genuinely useful and accurate.
Demonstrating expertise involves signals such as detailed author bios with verifiable credentials, accurate and well-sourced information, appropriate use of technical terminology, and a consistent track record of publishing quality content in a specific domain. For professional topics like medicine or law, formal credentials matter more; for lifestyle or hobbyist topics, demonstrated passion and practical experience can suffice.
Why it matters for SEO
Google's algorithms are designed to identify and reward genuine subject-matter knowledge, especially after updates like the Helpful Content Update and various core updates. Demonstrating expertise through author credentials, accurate content, and authoritative sourcing helps pages qualify for rankings on competitive, high-stakes queries.
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