Short answer: SEO vs AEO vs GEO is mostly a difference of goal, not method. SEO aims to rank pages in search results and win clicks; AEO (answer engine optimisation) aims to have your content used as the direct answer in featured snippets, voice and AI answers; GEO (generative engine optimisation) aims to have your brand mentioned and cited accurately inside AI-generated responses from tools like ChatGPT, Perplexity and Google AI Mode. All three rest on the same foundation of crawlable, indexed, genuinely useful pages; Google says optimising for generative AI search "is still SEO". For a small Indian business, fix SEO and Google Business Profile basics first, then add answer-first pages and AI crawler access.
What are SEO, AEO and GEO?
SEO: search engine optimisation
SEO makes your website discoverable, understandable and competitive in search engines so it ranks for the queries your buyers type, and earns clicks. It covers technical access (crawling, indexing, speed), site structure, content that answers the query better than competitors, links and mentions from other sites, and for local businesses, Google Business Profile. Success is measured in rankings, clicks and the leads those clicks produce.
AEO: answer engine optimisation
AEO is about being the answer, not one of ten links. It grew out of featured-snippet and voice-search work: structure a page so that a short, self-contained passage answers a specific question, then back it with detail. Today the same skill applies to AI Overviews and chat assistants that lift a passage and cite it. A page built for AEO opens with a direct two-to-four sentence answer, uses question-style headings, and puts comparisons in tables.
GEO: generative engine optimisation
GEO is the newest label. It was introduced in a 2023 research paper by researchers from IIT Delhi and Princeton University (Aggarwal et al., presented at KDD 2024), which tested how content changes affect visibility in generative engine responses and reported gains of up to 40% from methods such as adding statistics, quotations and source citations. In practice, GEO focuses on how AI systems describe and cite your brand across many sources: your site, listings, reviews, news mentions and third-party articles, and whether what they say is accurate.
SEO vs AEO vs GEO: comparison table
| Dimension | SEO | AEO | GEO |
|---|---|---|---|
| Goal | Rank and win the click | Be the extracted answer | Be mentioned, cited and described correctly in AI answers |
| Main surfaces | Google and Bing results, Maps pack | Featured snippets, AI Overviews, voice assistants | ChatGPT search, Perplexity, Google AI Mode, Copilot, Claude |
| Unit that wins | A page | A passage or table | A brand plus the pages and sources that back it |
| Crawlers to manage | Googlebot, Bingbot | Same | Same plus OAI-SearchBot, PerplexityBot, Claude-SearchBot |
| Key content trait | Relevance and depth for a query | Direct answer up top, clean structure | Specific, verifiable evidence; consistent facts across the web |
| Off-site work | Links, Business Profile, citations | Little | Mentions in reputable sources, listings, reviews |
| Main measurement | Rankings, clicks, leads (Search Console, GA4) | Snippet and AI Overview presence | Prompt panel, AI citations, AI referrals |
| First-party reporting | Search Console Performance | Search Console Generative AI report (impressions) | Bing AI Performance (citations); no report from ChatGPT or Perplexity |
The reporting row reflects what each platform publishes as of October 2026: Google's Generative AI performance report shows AI Overview and AI Mode impressions by page, and Bing's AI Performance report (public preview since February 2026) shows Copilot citations. Our AI search visibility tracking framework explains how to combine them.
Where do SEO, AEO and GEO overlap?
More than the acronyms suggest. Google's guide to optimising for generative AI features (updated July 2026) acknowledges the AEO and GEO labels and then says optimising for generative AI search "is optimizing for the search experience, and thus still SEO". Its AI features documentation states that to appear as a link in AI Overviews or AI Mode a page "must be indexed and eligible to be shown in Google Search with a snippet", with "no additional technical requirements".
That gives you a shared foundation that serves all three:
- Pages that crawlers can fetch and index, with the main content in HTML text.
- One page per distinct question or service, linked sensibly from related pages.
- A clear answer near the top, followed by detail, evidence and exceptions.
- Facts that are specific and current: prices with dates, named locations, process steps, first-party results.
- A consistent business identity: name, address, phone, services and founder details matching across your site and listings.
If you do these well for SEO, you have done most of AEO and a good part of GEO. The difference lies in the extra steps below.
What actually changes when you add AEO and GEO?
1. Fewer clicks per search, so the citation itself matters
Pew Research Center's 2025 study of 900 US adults' browsing found users clicked a traditional result in 8% of visits when an AI summary appeared, versus 15% without one, and clicked a link inside the summary in about 1% of visits. That is US data, but the direction is clear: being named and cited inside the answer becomes part of the job, not just ranking below it.
2. Ranking first is not required to be cited
Ahrefs' March 2026 analysis of 863,000 keyword results found only 37.9% of URLs cited in AI Overviews also ranked in the top 10 for that query, and 31% did not rank in the top 100. Google's documentation explains why: AI features may run a "query fan-out", searching several related sub-questions. A focused page that answers one sub-question well can be cited even where a portal owns position one. Details are in our Google AI Overviews guide.
3. More crawlers and settings to manage
SEO needed Googlebot and Bingbot to work. GEO adds OAI-SearchBot for ChatGPT search, PerplexityBot and Claude-SearchBot, each with its own robots.txt rules and IP lists, plus training-only crawlers you may decide to block. Our AI crawlability audit lists each one.
4. Content shifts from "covering keywords" to "supplying evidence"
Google's guide centres on non-commodity content, which it describes as content that "provides unique expert or experienced takes that go beyond common knowledge and the ordinary". The GEO paper found that adding statistics, quotations and citations raised visibility, while keyword stuffing did not help. For an Indian business this means publishing what only you know: your prices in ₹, your turnaround times, your city coverage, your case results with dates.
5. Off-site accuracy becomes a ranking problem
AI answers draw on listings, directories and articles about you. A wrong phone number on Justdial or an old price on a 2022 blog post can be repeated as fact. GEO adds a routine of checking what AI systems say about you and correcting the source.
What does not change, whatever the acronym?
| Claim you will hear | What the platforms say |
|---|---|
| "You need an llms.txt file for AI search" | Google lists llms.txt and other special markup among things you do not need; see our llms.txt analysis |
| "Add AI schema to get cited" | Google says structured data is not required and warns against over-focusing on it |
| "Chunk content into short blocks for LLMs" | Google lists chunking as unnecessary; write sections that stand alone at the length the topic needs |
| "Rewrite everything for AI" | Google says rewriting content just for AI systems is not needed |
| "Buy mentions across the web" | Google lists seeking inauthentic mentions as unhelpful; AI features also rely on spam-fighting systems |
| "GEO replaces SEO" | Every AI search product documented so far reads from a search index that classic SEO feeds |
How should a small Indian business prioritise SEO, AEO and GEO?
Most small businesses have a few hours a month and no dedicated SEO person. Work in this order; each stage depends on the one before it.
| Stage | Do this | Discipline | Done when |
|---|---|---|---|
| 1. Be findable locally | Complete and verify Google Business Profile; correct name, phone, hours and categories; same details on Justdial, IndiaMART or your sector platform | SEO (local) | Profile verified; listings match |
| 2. Be indexable | Search Console and Bing Webmaster Tools set up; key service pages indexed; no stray noindex | SEO | Every service page shows "URL is on Google" |
| 3. Let AI crawlers in | robots.txt and firewall allow OAI-SearchBot, PerplexityBot, Claude-SearchBot | GEO | Bots seen in logs with 200 responses |
| 4. Answer the top 10 questions | One page or section per real buyer question, answer first, with your prices, process and timelines | AEO | Each question has one URL that answers it in 2–4 sentences |
| 5. Add evidence | Case results, worked examples, photos of real work, dated facts | GEO / SEO | Every service page has at least one fact a competitor cannot copy |
| 6. Track | GA4 AI channel, 20-prompt monthly panel, leads in CRM by source | All | Monthly one-page report |
Stage 1 matters more than most owners expect. Google's local ranking help page says local results are based mainly on relevance, distance and prominence, and its AI optimisation guide says Business Profiles help products and services appear in AI responses. Our local business AI search guide covers this stage in detail.
Worked example: a three-person interior design studio in Pune with about six hours a month to spare. Month one: stages 1–3 (roughly four hours for the profile and listings, two hours with their web developer on Search Console and robots.txt). Months two and three: stage 4, two question pages a month, such as "2BHK interior cost in Pune" with their own ₹ ranges by finish level, and "how long does a full-home interior take". Month four onwards: add one project write-up with photos, area and budget each month, and run a 20-prompt check. These hours are our planning estimate for a site of under 30 pages, not a benchmark.
When to bring in help: if stage 2 shows indexing problems you cannot diagnose, if you sell in a competitive category where pages need original research, or if leads depend on several cities. Our SEO services and AEO and GEO services are built around this same sequence; for a deeper strategy view read the AEO and GEO guide.
How do you measure SEO, AEO and GEO?
| Discipline | Leading indicator | Business indicator | Tool |
|---|---|---|---|
| SEO | Indexed priority pages; non-brand clicks | Organic enquiries and qualified leads | Search Console, GA4, CRM |
| AEO | AI Overview and AI Mode impressions per page | Leads from pages built as answers | Search Console Generative AI report, GA4 |
| GEO | Mention, citation and accuracy rates in a fixed prompt panel; Copilot citations | AI-assistant referrals that become leads; branded search growth | Prompt sheet, Bing AI Performance, GA4 AI channel, CRM |
Report the three together. A month where clicks fall but AI impressions and branded enquiries rise is not a failing SEO month; it may be the shift Pew measured, showing up in your own data.
Sources
- Google Search Central: Optimizing for generative AI features: "still SEO", list of unnecessary tactics, non-commodity content, Business Profile role.
- Google Search Central: AI features and your website: eligibility, no additional requirements, query fan-out.
- Aggarwal et al., GEO: Generative Engine Optimization (arXiv): origin of the GEO term, author affiliations, KDD 2024, up-to-40% visibility finding.
- Pew Research Center (July 2025): 8% vs 15% click rates with and without AI summaries; 1% clicks within summaries.
- Ahrefs (March 2026): 37.9% of AI Overview citations rank in the top 10.
- Search Console Help: Generative AI performance report and Bing AI Performance report: AI-specific reporting.
- Google Business Profile Help: local ranking: relevance, distance and prominence.