GEO and SEOSchema Markup for LLM Citation: Infrastructure, Not a Growth Hack
Schema markup functions as infrastructure that removes parsing friction for large language models rather than a direct lever for citations. When Google launched schema.org in 2011 the goal was richer display eligibility for search results, not automatic ranking gains. The same distinction holds today. An Ahrefs study that tracked 1,885 pages after JSON-LD addition against 4,000 matched controls found Google AI Overviews citations changed by -4.6 percent, Google AI Mode by +2.4 percent and ChatGPT by +2.2 percent. All three results were statistically indistinguishable from zero. The data therefore separates correlation from causation and forces a precise board conversation about where budget actually moves visibility.
6 Jun 2026