Three acronyms now compete for the same budget line: SEO, AEO and GEO. They overlap heavily, but each targets a different surface and is judged by a different result, and knowing which is which keeps you from paying twice for the same work.
- SEO targets ranked results, AEO targets a single extracted answer, and GEO targets inclusion as a source inside an AI-generated response.
- Google’s documentation says no additional requirements or special optimizations are needed to appear in AI Overviews or AI Mode, beyond being indexed and snippet-eligible.
- The GEO research paper (KDD 2024) found that citing sources, adding quotations and adding statistics raised visibility in its tests, while keyword stuffing did not.
- For most businesses, one well-structured, evidence-rich page serves all three, so buy the work once and measure it three ways.
What SEO still covers
SEO (search engine optimization): the work of making pages crawlable, relevant and trustworthy enough to rank in a search engine’s results. Its success measures are rankings, clicks and the traffic and enquiries that follow.
SEO also remains the entry ticket for Google’s AI features. Google’s documentation on AI features states that to be shown as a supporting link, “a page must be indexed and eligible to be shown in Google Search with a snippet,” and that there are no additional technical requirements.
The implication is practical. If your pages are not indexed, no amount of AI-specific tactics will place them in Google’s AI answers. Fix crawling, indexing and snippet eligibility first.
What AEO adds
AEO (answer engine optimization): shaping content so a system can lift a short, direct answer from it. The older form is the featured snippet, and the newer form includes answers spoken or summarized by AI assistants.
Google’s featured snippets documentation describes snippets as special boxes where the format of a regular result is reversed, and says site owners cannot mark a page as a featured snippet. Google’s systems decide whether a page makes a good one for a given query.
So AEO is less a technique you switch on than a writing habit. Put the direct answer first, define terms in one sentence, and make each section understandable when quoted alone. Our article on query fan-out shows why answering the related sub-questions matters as well.
What GEO research found
GEO (generative engine optimization): the practice of increasing how often and how prominently your content appears in responses from generative search engines. The term comes from a paper by Pranjal Aggarwal and colleagues, accepted to KDD 2024.
The authors built GEO-bench, a benchmark of 10,000 queries, and tested nine content methods. Their abstract states that GEO “can boost visibility by up to 40% in generative engine responses.” The strongest methods were adding citations to sources, adding quotations and adding statistics, while keyword stuffing performed poorly and measured about 10% below baseline on Perplexity.
The paper also reported that results varied by domain and that lower-ranked sites gained more than top-ranked ones. These are results from the authors’ own tests, not guarantees for live engines. They do support a simple habit: make claims specific, sourced and quotable.
The three disciplines side by side
The table summarizes how the disciplines differ in target, measure and levers. The final column notes how strong the public evidence is for each.
| Discipline | Target surface | Typical success measure | Main levers | Evidence base |
|---|---|---|---|---|
| SEO | Ranked results pages | Rankings, clicks, conversions | Crawlability, relevance, links, page quality | Mature, documented by search engines |
| AEO | One extracted answer, such as a featured snippet | Snippet or answer appearances | Direct answers, clear definitions, structure | Documented for snippets; engine-selected |
| GEO | Sources cited inside AI responses | Citation frequency and position | Sourced claims, quotations, statistics, clarity | Early; one peer-reviewed benchmark plus vendor studies |
Notice that Google’s AI features page does not use the terms GEO or AEO at all. The labels come from the industry, which is why they are defined differently from vendor to vendor.
Where to start, in order
Because the disciplines share most of their foundations, sequence matters more than choosing a label. A workable order for a small team follows.
- Confirm important pages are indexed, snippet-eligible and not blocked from the crawlers you want, using our guide to robots.txt for AI crawlers.
- Rewrite key sections so the direct answer comes first and each passage stands alone.
- Add attributed statistics and named sources inline, following the pattern the GEO paper tested.
- Treat schema as supportive only, as outlined in what the evidence supports for schema markup.
- Measure citations over repeated runs, since answers vary, as described in our guide to measuring AI search visibility.
What to ask a vendor who sells GEO
A vendor selling GEO as a separate product should be able to explain what it does that good SEO does not. Google states there are no special optimizations necessary for its AI features, so any claim of a secret technique needs evidence.
Ask which engine the work targets, how citations are measured across repeated runs, and what happens to results when the engine changes. Ask for a before-and-after example with the method stated. If the answer is a proprietary score with no method, treat it as marketing, not measurement.
Our piece on how to choose an AI marketing agency adds general questions that apply here too.
Frequently Asked Questions
Is GEO different from SEO?
GEO targets citations inside AI-generated answers, while SEO targets ranked results. They share foundations such as indexing and content quality, so most of the work overlaps.
Does Google require special optimization for AI Overviews?
No. Google’s documentation says there are no additional requirements or special optimizations needed beyond a page being indexed and eligible to appear with a snippet.
Which discipline should a small business prioritize first?
Start with SEO fundamentals, because indexing and quality gate everything else. Then structure content for direct answers and add sourced evidence, which serves AEO and GEO together.
Separating these labels makes budgets easier to defend and vendor claims easier to test. At Grow with Hafsa we help businesses plan AI search and AI marketing work around evidence instead of acronyms, and we are happy to review where your current effort overlaps.