Schema for AI Optimization: Is It That Deep?

As AI search engines become core visibility channels, schema is increasingly being evaluated through an AI lens rather than a traditional rankings one.

The logic feels straightforward. Structured data exists to make content more machine-readable, so it should help AI systems interpret, synthesize, and cite information more accurately. In practice, however, the picture is more complicated.

What the Evidence Suggests Right Now

A recent controlled experiment published by Search Engine Land compared three nearly identical pages:

  • One with well-implemented schema
  • One with poorly implemented schema
  • One with no schema

Only the page with high-quality, complete schema appeared in Google AI Overview, and it also achieved the strongest organic ranking.

This doesn’t prove that schema directly “earns” AI citations. But it does suggest that schema quality may influence how well Google can process, index, and trust a page. All prerequisites for inclusion in AI Overviews.

Not a silver bullet. More like a prerequisite check.

Why Skepticism Persists

Outside of controlled testing, many practitioners report little to no measurable lift in AI citations after implementing schema. The most common objections sound like this:

  • Base LLMs are trained on historical data and aren’t literally “reading” live schema markup.
  • Google AI Overviews are highly dynamic and difficult to test consistently.
  • Sites with strong schema often already have better content, authority, and technical fundamentals, muddying attribution.

In a Reddit thread asking “Has Schema Actually Helped Anyone Get Cited in AI Overviews?”, one marketer was blunt:

“Schema markup doesn’t magically get you cited in AI overviews… there’s zero reliable data showing schema directly impacts AI citations.”

Where Schema May Be Helping

Not all feedback was dismissive. One user shared anecdotal but telling observations after implementing schema:

“It wasn’t necessarily recommending their brand, but when it surfaced in queries, it surfaced with more accurate information and confidence.”

They reported more consistent answers around pricing, availability, and services, despite minimal changes to on-page copy.

That suggests schema may not drive visibility directly, but it can reduce ambiguity once a brand or page is already in the mix.

The Most Defensible Takeaway

Schema isn’t creating AI visibility on its own. But it can meaningfully support it.

High quality structured data appears to:

  • Reduce ambiguity around entities, relationships, and intent
  • Reinforce clarity and trust signals for machine interpretation
  • Improve consistency in how information is summarized and surfaced

Poor, incomplete, or misaligned schema doesn’t help, and in some cases may work against comprehension.

How to Think About Schema for AEO

For brands optimizing for AI-driven discovery:

  • Treat schema as foundational infrastructure, not a growth lever.
  • Focus on correctness, completeness, and alignment with on-page content.
  • Use schema to clarify answers, not to manufacture them.
  • Pair structured data with authoritative, answer-first content.

Schema hasn’t become more important because of AI. It’s become more visible (and more scrutinized) as AI systems increasingly decide how, when, and whether your content gets represented at all. We at Arc Intermedia have long been a fan of schema to help search engines spires better understand context.

Need Help?

If you’re wondering whether your schema is actually helping or just technically “there,” that’s where we come in.

Arc Intermedia helps brands cut through the hype, fix what’s actually broken, and build schema and AI optimization strategies that support real visibility (not just best-practice checklists).

If you want a second opinion on your schema, AI Overview performance, or broader organic visibility strategy, contact us.

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