SEO gets your page into the results. AEO wins the direct-answer box on the results page. GEO gets you cited by name inside an AI-generated answer. Most practices need all three, usually in that order.
These three terms get used almost interchangeably in a lot of marketing pitches, which is a shame, because they're solving genuinely different problems. If you're trying to figure out which one your practice actually needs, or whether you need all three, it helps to understand what each one is actually optimizing for.
SEO: getting the page ranked at all
Search engine optimization is the oldest of the three and still the foundation everything else sits on. It covers the technical health of a site, page speed, mobile usability, crawlability, along with on-page factors like content quality and heading structure, and off-page factors like backlinks from credible sites. The goal is straightforward: when someone searches a relevant term, your page shows up in the results, ideally near the top.
What SEO doesn't guarantee is that the page shows up as the answer. It gets you into the results. Whether you're the one, two, or ten result someone actually clicks is a separate question, and increasingly, whether Google answers the question directly without anyone clicking through at all is a bigger factor than it used to be.
AEO: winning the answer box
Answer engine optimization is about that second problem. Google increasingly tries to answer a question directly on the results page, through featured snippets and AI Overview boxes, before a user clicks anything. AEO is the practice of structuring content so Google can lift a clean, direct answer from your page for that box. Question-first headings, a concise answer near the top of a section, and FAQ schema are the main tools here.
A page can rank well under normal SEO and never win the answer box, because winning the box requires a specific structural setup that ranking alone doesn't provide. We've fixed this on plenty of existing, already-ranking pages just by rewriting the first two sentences under a heading to directly answer the implied question, rather than easing into it.
GEO: getting cited by AI models
Generative engine optimization is the newest of the three, and it's solving a problem that didn't fully exist a few years ago: when a patient asks ChatGPT or Perplexity a question instead of Googling it, does the model know your practice exists, and does it trust your site enough to mention it by name. This depends heavily on structured data, consistent facts about your practice across the web, and content specific enough to be genuinely worth citing rather than generic enough to apply to any practice.
GEO overlaps with SEO and AEO in some of its mechanics, clean structure and good content help all three, but it has its own specific requirements, particularly around schema markup and cross-platform consistency, that neither traditional SEO nor AEO fully covers on their own.
A quick example of the same page treated three ways
Take a page about "knee replacement recovery timeline." An SEO-only version targets the keyword, has decent length, earns some backlinks, and ranks respectably. An AEO version does all of that plus opens with a direct, specific answer, "most patients return to light activity within 4 to 6 weeks, with full recovery typically taking 3 to 6 months", structured so Google can lift that sentence into a snippet. A GEO-ready version does both of the above, plus carries Physician schema naming the surgeon, states the practice's credentials plainly, and keeps that same recovery timeline consistent with what's stated on the practice's Google Business Profile and any directory listings. Same topic, three different levels of readiness.
Which one should you start with
In practice, yes to all three eventually, though not necessarily all at once. SEO is the foundation and comes first regardless, since AEO and GEO both assume a technically sound, crawlable site to build on. AEO is usually the fastest additional win on an already-decent site, since it's often a content restructuring exercise rather than a rebuild. GEO takes longer to show results because AI models don't re-index the web on Google's schedule, but it's the piece that determines whether you exist at all in a growing share of how patients now search.
If you're starting from nothing, get the technical SEO right first. Everything else is harder to build on a site that's slow or poorly structured to begin with.
How this plays out differently by specialty
A dermatology practice might see AEO wins fastest, given how many direct-answer questions exist around procedures. A cardiology practice, given YMYL scrutiny, often sees GEO and structural work matter more relative to AEO. The right sequencing depends on your specific specialty's search patterns, and also on which market you're in, our New Zealand page walks through how this sequencing looks in a genuinely smaller, less saturated market specifically.
Quick answers
Q.Do I need separate content for SEO, AEO, and GEO?
No, usually the same page can serve all three if it's structured correctly, direct answers near the top, proper schema, consistent facts. It's less about writing three versions and more about writing one version well.
Q.Which of the three is hardest to measure?
GEO, by a wide margin. SEO has decades of established tools for tracking rankings. AEO can be checked by monitoring featured snippet ownership. GEO requires manually testing AI platforms with real questions, since there's no equivalent to Google Search Console for AI citation tracking yet.
Q.Should every practice follow the same SEO, then AEO, then GEO sequence?
Generally yes for the foundation, but which one deserves the most ongoing investment afterward varies by specialty and by how competitive your specific local market already is.