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Core concept · Content Strategy

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Definition

Source credibility is the degree to which an AI system or search engine trusts a source enough to cite it. It is built from a combination of signals: domain authority, author credentials, citation history, structured data, third-party references, and consistency of accurate information over time. AI systems do not cite sources neutrally — they have implicit hierarchies of trust built from their training data and retrieval logic. A source that has been frequently cited by other authoritative sources, that has structured data confirming its entity identity, and that has a history of accurate information ranks higher in that hierarchy than a source that is new, unverified, or inconsistently referenced. Source credibility is earned over time and cannot be shortcut.

E-E-A-T

Author authority

Trust signal

Authoritativeness signal

Citation signal

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