Guide
Published · By Shoaib Mustaque· 6-minute read
SEO gets a page ranked in a list of links. Answer Engine Optimization (AEO) gets a page chosen as the direct answer inside a search engine: Google AI Overviews, featured snippets, People Also Ask. Generative Engine Optimization (GEO) gets a brand cited by assistants that write their own answers: ChatGPT, Gemini, Perplexity, Claude. Each depends on the one before it.
Side by side
The three disciplines differ in what they win, where it appears and how it is measured. SEO wins a position on a results page. AEO wins the answer box above the results. GEO wins a citation inside an answer that may never show a results page at all. The levers overlap, which is why one team can run all three.
| SEO | AEO | GEO | |
|---|---|---|---|
| What you win | A rank in the list | The direct answer | A citation in a generated answer |
| Where it shows | Google and Bing results | Google AI Overviews, featured snippets, People Also Ask, voice assistants | ChatGPT, Gemini, Perplexity, Claude, Microsoft Copilot |
| Who decides | Ranking systems | Ranking systems plus an answer model | A retrieval step, then a language model |
| Main levers | Crawlability, content, links | Answer-first structure, question headings, schema that matches the text | Entity consistency, Bing indexing, crawler access, third-party mentions |
| Measured by | Rankings, clicks | Snippet and AI Overview share per question | Prompts cited per engine, share of answer |
| Typical lag | Weeks to months | Follows rankings | Perplexity 1–2 weeks; ChatGPT 2–8 weeks after Bing indexing; competitive prompts 6–12 months |
SEO
SEO is the work of being crawled, indexed and ranked by Google and Bing. It is the foundation because every answer engine starts from a search index. Google says a page must be indexed and eligible for a snippet to appear in an AI Overview. Microsoft has said Bing is ChatGPT's default search experience. No index, no citation.
What changes in 2026 is that Bing matters as much as Google. Most Indian sites have never opened Bing Webmaster Tools. Doing so, submitting the sitemap and switching on IndexNow is a week-one task in every engagement we run, because it is the shortest path to being retrievable by ChatGPT.
What does not change: server-rendered HTML, one topic per page, internal links, and no paid links. Google's Search Essentials describe the technical requirements and spam policies, and they apply to AI Overviews unchanged.
AEO
AEO is the work of being chosen as the direct answer inside Google: the AI Overview, the featured snippet, the People Also Ask box. It adds structure to SEO: a question as the heading, the answer in the first 40–60 words, a table or list where the content compares or sequences, and schema that matches the visible text.
AEO depends on SEO: answer features draw almost entirely from pages already ranking near the top for the question. If a page is on page three, restructuring it will not put it in the Overview; ranking it will.
One thing AEO used to include is gone. Google limited FAQ rich results to government and health sites in August 2023 and withdrew the feature entirely from 7 May 2026. The question-and-answer structure on the page still matters, because it is how answer models find a clean question with a clean answer, but there are no stars to win any more.
GEO
GEO is the work of being retrieved and cited by assistants that write their own answers. It adds three things SEO never required: a consistent entity across the web so the model knows who you are, access for the AI crawlers that fetch pages, and mentions on the third-party pages the engines already cite for your prompts.
The GEO service page covers the six workstreams; the guide to how ChatGPT chooses sources covers the Bing dependency in detail.
Decision
Start with the discipline whose absence blocks the others. If your pages are not indexed in Google and Bing, nothing else works, so SEO and technical fixes come first. If you rank but are not the answer, restructure for AEO. If the assistants cite competitors for your prompts, add the GEO entity and mentions work.
Search site:yourdomain.com on Google and on Bing. Open Google Search Console and Bing Webmaster Tools. Pages missing from Bing are invisible to ChatGPT search; fix that before anything else.
Fetch a key page with JavaScript off, or read the HTML source. If the answer is not in the HTML, crawlers that do not run scripts never see it. Server-render it.
Search your brand name on Google, ChatGPT and Perplexity. If the descriptions disagree about what you do or where you are, fix the sources they came from and your schema.
For your top 20 questions, see who holds the featured snippet and the AI Overview on Google. If you rank in the top ten but are not cited, restructure those pages answer-first.
Ask ChatGPT, Gemini, Perplexity and Claude the same 20 prompts. Note who is cited and from which third-party pages. That list is your mentions plan.
Most brands we audit fail steps one or two. That is good news: indexing and rendering are engineering problems with known fixes, and they move the fastest.
Timelines
SEO moves in weeks to months depending on competition. AEO moves when rankings move, because it draws from them. GEO is quickest on Perplexity, usually one to two weeks, then ChatGPT two to eight weeks after Bing indexing, and slowest for competitive prompts, six to twelve months. None of it can be guaranteed.
| Discipline | First signal | Competitive terms | What moves it |
|---|---|---|---|
| SEO | Weeks for long-tail pages once indexed | 6–12 months | Technical health, content, links |
| AEO | When the page reaches the top ten | Follows rankings | Answer-first structure on ranking pages |
| GEO (Perplexity) | 1–2 weeks after fixes | 6–12 months | Retrievability, structure, mentions |
| GEO (ChatGPT) | 2–8 weeks after Bing indexing | 6–12 months | Bing index, entity, mentions |
| GEO (Google AI Overviews, Gemini) | Follows organic rankings | 6–12 months | SEO plus entity |
Every Citemark plan runs the three together, because the work overlaps and the order is fixed by the engines, not by us. The free audit tells you which step you are on.
Sources
Every factual claim above about how an engine works, or about what a company publishes, links to the source it came from. Each URL was opened and checked on the date shown at the top of this guide. If a source later changes or disappears, the claim should be re-checked, not assumed.
Keep reading
The free audit runs your category's prompts on ChatGPT, Gemini, Perplexity, Claude and Google AI Overviews and shows who each engine cites today. Five working days, screenshots included.