Three acronyms, roughly the same sales pitch, wildly different price tags. If you own a service business and you have taken a cold call in the last six months, you have been offered at least one of them.
Here is the short version, and then the long one: SEO, AEO, and GEO are three layers of the same job, not three competing products. Two of the three acronyms describe nearly the same work. Anyone selling them as separate line items on the same invoice is selling you the same hour twice.
The definitions, in one table
| Term | Stands for | Optimizes for | You win when |
|---|---|---|---|
| SEO | Search engine optimization | Ranked lists of links | Your page ranks and gets the click |
| AEO | Answer engine optimization | A direct answer to a specific question | Your page is the source behind the answer |
| GEO | Generative engine optimization | AI-generated output across systems | Your brand appears in what the AI writes |
Read those three “you win when” columns again. SEO is about a position. AEO and GEO are both about being inside something a machine produced. That is why the second and third rows blur together — and they should, because in day-to-day practice they are the same discipline described by two different vocabularies.
AEO and GEO are the same work with different marketing. I don’t say that to be cynical — I say it because a business owner is about to get quoted for both, and the second quote is free money for whoever sent it.
Bradford Blecker, Founder, Bradford Strategies
SEO: still the foundation, and not optional
Search engine optimization is the practice of making a website findable, crawlable, credible, and relevant enough to rank in a conventional search result. It is the oldest of the three and the only one that is genuinely mature.
The important thing to understand is that every AI system still runs on a search index. Google’s AI Overviews are grounded in Google’s index. ChatGPT search retrieves through Bing. Perplexity runs its own pipeline but overlaps heavily with Google’s results. There is no separate “AI index” you can be added to — Google has said so directly.
Which means the retrieval stage of every answer engine is a search problem, and if you fail it, nothing downstream matters. A business with a slow, thin, badly structured site does not have an AI visibility problem to solve separately. It has an SEO problem that is now also visible in a second place.
What SEO still owns outright: technical crawlability, site architecture, page speed, internal linking, keyword-intent mapping, local pack rankings, and the entire map-pack game that still drives emergency and near-me demand.
AEO: winning the direct answer
Answer engine optimization is the practice of structuring information so a machine can extract it, trust it, and repeat it as a direct answer. It predates generative AI — featured snippets and voice assistants were answer engines too — but it became a serious discipline when AI Overviews put a synthesized answer above the results for a large share of queries.
AEO’s characteristic move is extractability. Answer the question in the first two sentences. Use a genuine question as the heading. Put comparisons in a table. Keep definitional statements short enough to quote without editing. Structured content is cited at meaningfully higher rates than flowing prose — one analysis found listicle-format content cited at roughly 25% versus 11% for opinion-style pieces, and content with tables cited substantially more often than content without.
We go deeper on this in what answer engine optimization actually is.
GEO: visibility inside generated output
Generative engine optimization is the broader framing: influencing whether and how your brand shows up in anything an AI generates — a cited answer, an unlinked mention, a comparison, a recommendation, a shortlist.
Where GEO adds something real beyond AEO is that it takes unlinked brand mentions seriously. A model can name your business without linking to you, and for a local service business that mention is often the whole conversion event — the homeowner writes the name down and searches for it directly.
This is where the off-site half of the work lives, and it is the half most people underinvest in. Ahrefs found that brand mention frequency correlates with AI Overview presence at roughly three times the strength of backlinks. And on branded questions specifically, analysis of tens of thousands of citations found that reviews and third-party validation accounted for the large majority of what got cited, while the brand’s own pages accounted for a small single-digit share.
Sit with that for a second. When an AI is asked about your company by name, it mostly is not reading your website. It is reading what other people wrote about you.
The part that actually matters: the engines disagree
Arguing about acronyms is a distraction from the finding that should actually change your strategy. The major AI systems run on different indexes and behave very differently:
| System | Retrieves from | Overlap with Google’s top 10 | Avg. sources cited |
|---|---|---|---|
| Google AI Overviews | Google’s index | Falling — reported near 38% in early 2026, down from 76% in mid-2025 | Varies by query |
| ChatGPT search | Bing’s index | ~6.5% | ~7.9 |
| Perplexity | Its own pipeline | ~82% | ~21.9 |
| Claude | Brave Search | Low; favors established journalism | ~5.7 |
Perplexity is close to a mirror of Google. ChatGPT is close to a different internet. Those two systems, asked the same question about roofers in your city, may return almost no overlapping businesses.
The strategic implication is not “do GEO instead of SEO.” It is that Google rankings buy you Perplexity and help with AI Overviews, and buy you very little in ChatGPT — where a different set of signals, heavily weighted toward established third-party sources and consistent brand descriptions, does the work.
Everybody’s fighting about whether it’s called GEO or AEO while their business is invisible in ChatGPT because their address is written four different ways across the internet. Pick a name, then go fix the boring thing.
Bradford Blecker, Founder, Bradford Strategies
What overlaps, and what doesn’t
A practical way to think about the three: they share most of their work and differ at the edges.
- Shared by all three (roughly 70% of the job): crawlable, fast, server-rendered pages; genuinely useful content; accurate structured data; consistent name, address and phone; real reviews; earned mentions on sites that matter.
- SEO only: map-pack optimization, keyword-intent architecture, click-through-rate work on titles and descriptions, internal link equity.
- AEO/GEO only: extractability formatting, publishing original data worth quoting, defining a set of prompts to track, engine-specific work for the systems that don’t run on Google, and measuring citation share rather than rank.
That 70% number is the honest one, and it is the reason we do not sell these as three products. If an agency’s GEO proposal does not overlap heavily with its SEO proposal, one of the two is not real.
So which do you need?
A rough decision path for a service business:
- Google Business Profile unclaimed, under ~25 reviews, or a site that is slow or hard to crawl? You need SEO. Everything else is premature. Start with local SEO.
- Ranking decently, map pack working, leads flat or softening? Your fundamentals are fine and demand is moving. This is the AEO/GEO conversation, and it is the right time to have it.
- High-consideration jobs — roof replacements, system changeouts, remodels, commercial contracts? Prioritize the AI layer now. Long-deliberation purchases moved to AI research first and fastest.
- Emergency-driven work — burst pipes, no heat, storm damage? The map pack still owns that demand. Keep the weight on local SEO and treat AI visibility as the medium-term play.
Common questions
Is GEO just a rebrand of SEO?
Not quite, but the overlap is large. GEO shares most of its methods with SEO and adds a genuinely different measurement model, a real emphasis on unlinked brand mentions, and engine-specific work for systems that don’t run on Google’s index. Roughly 70% shared, 30% new — and the 30% is real.
Should I pay for GEO and AEO separately?
No. They describe substantially the same work. If a proposal lists both as separate deliverables with separate prices, ask which specific tasks appear under one and not the other. The answer is usually revealing.
Will SEO become obsolete?
No, though what it optimizes for is shifting. Every answer engine retrieves from an index before generating anything, so being findable remains a precondition. What is genuinely changing is that clicks are falling on informational queries even where rankings hold — which is why measurement has to expand beyond traffic.
How do I measure GEO results?
Define a fixed set of prompts a real buyer would ask, run them across the major engines on a schedule, and track how often you appear, in what position within the answer, and whether you are linked or just named. That baseline is the report. Traffic alone will understate the return, because a large share of the value arrives as a mention nobody clicks.
The short version
SEO gets you into the index. AEO gets you into the answer. GEO is AEO with a wider lens and a better name for the off-site half. You need all three, they are mostly one job, and the businesses that win are the ones whose fundamentals were boringly solid before any of these acronyms existed.
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