AI Search Visibility Glossary
When someone asks ChatGPT, Gemini, Perplexity or a voice assistant which business to call, the answer names a few firms and leaves the rest out. The industry uses five acronyms for the work of getting named (GEO, AIVO, LLMO, AEO and VSO), and FAIVO names the role that owns it. AppWT uses one plain name for all of it: AI search visibility. Each term below is defined once, at its own permanent link.
AI search visibility
AI search visibility is how often, and how accurately, AI tools name your business when people ask them for a recommendation. Those tools include ChatGPT, Gemini, Perplexity, Claude, Google AI answers and voice assistants. AppWT uses it as the one public name for the work the six terms below describe.
Also searched as: AI visibility, AI search optimization, AI SEO.
Generative Engine Optimization (GEO)
Generative Engine Optimization shapes a website so AI search tools such as ChatGPT and Perplexity quote its answers, instead of only listing it among blue links.
Also searched as: generative search optimization, GEO SEO.
AI Visibility Optimization (AIVO)
AI Visibility Optimization makes sure a business shows up in AI search and in voice assistants across the major platforms, not just one.
Also searched as: AI visibility services.
Large Language Model Optimization (LLMO)
Large Language Model Optimization organizes a business's content so assistants such as ChatGPT, Claude, Gemini and Perplexity recommend it, and describe it accurately, when people ask them for a tip.
Also searched as: LLM optimization, LLM SEO, ChatGPT SEO.
Answer Engine Optimization (AEO)
Answer Engine Optimization tunes content so tools that answer questions directly, such as ChatGPT and Perplexity, pick your business as the answer.
Also searched as: answer engine SEO, AI Engine Optimization.
Voice Search Optimization (VSO)
Voice Search Optimization sets a business up to be named when people ask Alexa, Siri or Google Assistant a question out loud.
Also searched as: voice SEO, voice assistant optimization.
Fractional AI Visibility Officer (FAIVO)
A Fractional AI Visibility Officer is a named expert, working part of the week, who owns whether AI tools recommend your business, checks it every month and fixes what is wrong.
Also searched as: fractional AI visibility lead.
How the six terms fit together
The terms overlap. GEO, LLMO and AEO all describe content that AI tools can quote with confidence. AIVO covers the same goal across every major platform, VSO covers spoken questions, and FAIVO is the person who owns the result month to month. AppWT groups them under one name, AI search visibility, so you do not have to pick an acronym.
Want to know whether AI tools name your business today? Call or book a free consultation to hear what they say about you now and what would change it.









