A few years ago, being found online meant one thing: ranking on Google. Today there are three ways a patient may discover a doctor, and they work differently. They are known by three short acronyms: SEO, AEO and GEO. A doctor does not need to master any of them technically. But understanding what each one means makes it clear why a structured digital presence matters more now than ever.
SEO: being found in search results
SEO stands for Search Engine Optimisation. It is the oldest of the three and still the foundation. SEO is about appearing in the list of blue links a patient sees when they search Google - for a symptom, a condition, a specialty or a location.
For a doctor, SEO depends on the things this series has already covered: a structured URL, clear titles and headings, direct opening lines, visible authorship, and accurate specialty and city information. When these are in place, Google can understand who the doctor is and which patient searches they are relevant to. SEO has not gone away. It is still how a large share of patients begin.
AEO: being the answer, not just a result
AEO stands for Answer Engine Optimisation. It reflects a shift in how people search. Patients increasingly ask a full question and expect a direct answer - through voice assistants, through the answer box at the top of Google, or through a quick spoken query on a phone.
AEO is about being the source that gets chosen to answer. This is why the opening lines of a blog matter so much: an answer engine looks for a clear, self-contained response to a specific question. A blog titled “when should I worry about back pain?” that answers plainly in its first lines is far more likely to be picked as the answer than one that takes three paragraphs to arrive. AEO rewards clarity and directness above everything.
GEO: being cited by AI systems
GEO stands for Generative Engine Optimisation. It is the newest of the three and the most important to understand now. When a patient asks an AI system a health question, the system does not return a list of links. It generates a written answer, and it draws that answer from sources it considers credible.
GEO is about being one of those trusted sources. AI systems favour content that is clearly structured, clearly authored by a qualified expert, and consistent across the web. A doctor with a complete, well-organised profile and a body of clinical content under their name is far more likely to be drawn upon and named, than a doctor whose presence is thin or scattered. As more patients begin their search by asking AI, GEO becomes a direct route to discovery.
What this means for a doctor
The three acronyms can sound technical, but the underlying message is simple and reassuring. SEO, AEO and GEO are not three separate projects requiring three separate efforts. They reward the same things: clear structure, direct answers, visible authorship, accurate information, and consistency.
A doctor who builds one well-structured digital presence is, without doing anything extra, optimised for all three at once. A scattered presence struggles with all three together. This is the real point. The patient’s path to a doctor is splitting into search results, answer boxes and AI summaries, but the foundation that wins across every path is the same: a structured, credible, doctor-owned digital home. Build that once, and a doctor is ready for how patients search today and how they will search next.