Source attribution is what makes a GEO program diagnosable. Without it, a team only knows whether they are cited; with it, they know *which* of their pages the model is pulling from, and which competitor pages are pulling the model away. Tools like Ahrefs Brand Radar lean heavily on source attribution as their core differentiator.
GEO glossary
Source attribution
Source attribution traces a mention or citation in an AI-generated answer back to the specific page, paragraph, or passage that the model used as the source.