A marketer adds an author bio listing their qualifications and industry certifications to a blog post. Which E-E-A-T principle does this primarily demonstrate?

The correct answer is Expertise. E-E-A-T stands for Experience, Expertise, Authoritativeness, and Trustworthiness. When an author lists their qualifications and industry certifications, they are primarily demonstrating their knowledge and skill in a particular field, which directly aligns with the definition of Expertise. While these credentials might contribute to their overall Authority and Trustworthiness, the most direct principle being shown is their specialized knowledge. Experience would be demonstrated by detailing years in the field or specific projects completed, rather than just qualifications.