Full Definition
An authority signal is evidence that contributes to an AI platform's assessment of a company's credibility. AI platforms do not have a single authority score they consult before generating a response. They process many signals simultaneously, and the weight of those signals collectively determines whether a company is included, cited, or recommended.
The most significant authority signals for B2B companies fall into several categories. Third-party citations are mentions or references from sources the AI platform has reason to trust: trade publications, analyst reports, industry directories, and academic or research institutions. These carry more weight than self-published content because they represent external validation. Review platform presence on G2, Capterra, Trustpilot, or category-specific platforms contributes structured, third-party data about a company's products and reputation. Schema markup, particularly Organization, Service, and DefinedTerm schema, provides machine-readable authority signals that help AI systems characterize a company accurately. Consistent entity representation across sources means the company name, description, and core claims align across the website, review platforms, social profiles, and third-party mentions. Original published research or definitions that other sources reference creates a citation chain that AI platforms recognize as an authority indicator.
No single authority signal is sufficient. A company with excellent schema markup but no third-party mentions has incomplete authority. A company with strong review presence but vague, inconsistent messaging has a different gap. Building authority for AEO means strengthening signals across all categories, with priority given to the weakest layers first.