AI Visibility Glossary: Every Term You Need to Know

Why an AI visibility glossary?

The digital marketing landscape has shifted. In 2026, over 40% of informational searches go through a generative AI before reaching a traditional search engine. ChatGPT, Perplexity, Google AI Overview, Gemini, Copilot: these platforms don't rank web pages, they synthesize answers. And to be cited in those answers, you need to master an entirely new vocabulary.

This glossary is not an academic dictionary. It's an operational tool designed for decision-makers, marketers, and digital teams who want to understand the mechanics of AI visibility and act accordingly. Each term is explained with its definition, its concrete business impact, and the actions you should take to leverage it.

AEO (Answer Engine Optimization), GEO (Generative Engine Optimization), the llms.txt file, Schema Markup, Knowledge Graphs, Topical Authority: these concepts are no longer reserved for technicians. They determine whether your brand exists or not in the answers your prospects receive when they ask questions to AI. Most companies don't yet master this vocabulary. That's an advantage for those who do.

Whether you're discovering the topic or looking to deepen your understanding of a specific concept, this glossary is your reference. It's updated regularly to reflect the rapid evolution of this ecosystem. For each term, you'll find a detailed article with examples, methods, and links to complementary resources.

AI visibility is a discipline in its own right that draws from SEO, semantics, content engineering, and artificial intelligence. This glossary bridges these worlds. It translates technical complexity into growth levers. Because ultimately, the point isn't to memorize these terms but to understand how they fit together to make your brand a reference that AI cites, recommends, and shares.

How to use this glossary

Each glossary entry is a complete page covering the definition, strategic context, practical implications, and implementation method. Terms are interconnected: when one concept references another, a link takes you directly to the detailed explanation.

If you're starting out, begin with the three foundational entries: AI Visibility, AEO, and GEO. These three concepts form the foundation for everything else. Then explore technical terms like Schema Markup and llms.txt to understand the concrete mechanisms.

For an industry-specific approach, check our industry pages that apply these concepts to your sector. And for practical step-by-step guides, head to our Resources section.