GEO and AEO both describe getting a business cited inside AI-generated answers — from ChatGPT to Google AI Overviews — and there's no official standard for which term wins. **The practice matters more than the label, but "GEO" also means geo-targeting, a completely different discipline, which means searching the wrong term can land a business owner with the wrong agency.**
What Do AEO and GEO Actually Mean?
Answer Engine Optimization (AEO) and Generative Engine Optimization (GEO) both describe structuring a business's content and entity signals so AI systems surface or cite it in a generated answer. Wikipedia's entry on the topic notes there's no consensus definition, listing AEO, GEO, large language model optimization (LLMO), and AI SEO as overlapping terms for the same underlying work (Wikipedia, 2026). In practice, the two terms point at the same discipline: answer-first content, structured data, consistent entity information, and credible citations that make a business retrievable and trustworthy to an AI system forming a response.
Where Did the Term 'GEO' Come From?
GEO has a specific, traceable origin that AEO doesn't. Researchers Pranjal Aggarwal, Vishvak Murahari, Tanmay Rajpurohit, Ashwin Kalyan, Karthik Narasimhan, and Ameet Deshpande coined "Generative Engine Optimization" in a paper first posted in November 2023 and later presented at KDD 2024, describing it as "the first novel paradigm to aid content creators in improving their content visibility in generative engine responses" (Aggarwal et al., 2023). AEO has no equivalent founding paper. It grew informally out of the older practice of optimizing for Google's featured snippets and "People Also Ask" boxes, then got relabeled once those answer boxes started pulling from AI instead of a single webpage.
Why Does an AI-Visibility Company Prefer 'AEO' Over 'GEO'?
Because the acronym collides with an unrelated field. Profound, a company that tracks brand visibility across AI answer engines, argues for AEO over GEO for four reasons: it's clearer about what the practice does, it builds on existing SEO vocabulary, "answer engines" will stay relevant as long as people ask questions, and — the one that matters most to a business owner — "GEO conflicts with geography, geology, and geo-targeting" (Profound, 2026). Profound backs that claim with a screenshot of a plain Google search for "GEO," which returns results about geography and geology, not AI visibility.
That collision is easy to confirm directly. A search for "GEO services" today surfaces agencies for both meanings side by side — local geo-targeting and geofencing marketing firms alongside AI-visibility shops that build for ChatGPT and AI Overviews — with nothing in the acronym itself to tell a business owner which kind of help they're about to hire.
Does Google Use Either Term Officially?
No. Google's own Search Central documentation on AI features — the page covering AI Overviews and AI Mode, last updated December 2025 — doesn't use "AEO," "answer engine optimization," "GEO," or "generative engine optimization" anywhere in the current guidance (Google Search Central, 2026). Google states plainly that there are no additional requirements or special optimizations needed to appear in AI Overviews beyond standard Search eligibility. Both terms are industry shorthand, not something Google has adopted as an official discipline — which is itself part of why the terminology hasn't settled.
| Term | Origin | What it optimizes for | Also means |
|---|---|---|---|
| SEO | Search-industry term from the 1990s | Ranking on a results page (Google, Bing) | No major collision |
| AEO (Answer Engine Optimization) | Grew informally out of featured-snippet and voice-search optimization; no single founding paper | Being the direct answer — snippets, "People Also Ask," AI-generated replies | No major collision |
| GEO (Generative Engine Optimization) | Coined by Aggarwal et al. in a 2023 paper presented at KDD 2024 | Being cited or synthesized into a generative AI system's answer (ChatGPT, Gemini, Perplexity) | Geography, geology, geo-targeting, geofencing — all pre-existing marketing terms |
When Does It Actually Matter Which Term You Use?
Why This Mix-Up Is Worth Knowing About If You're in Montana
It's not a hypothetical for a Flathead Valley business. Geo-targeting — the original meaning of "geo" in marketing — is exactly the kind of work a local Kalispell or Whitefish business already does: showing up for searches tied to a specific town or service area. That's a different job from getting named inside a ChatGPT or Google AI Overview answer, even though both now get called "GEO" somewhere online. A business owner who searches "GEO marketing Montana" looking for AI-visibility help is just as likely to land on a local geo-targeting or geofencing ad vendor — useful work, but not the same work.