SEO vs GEO vs AEO: What Is the Difference and Which Do You Need?

SEO, GEO and AEO are three names for overlapping work. SEO wins rankings and clicks. AEO wins direct answers such as featured snippets and voice replies. GEO wins inclusion in answers written by AI. You do not choose one. You build SEO first, then shape the same pages for answers.

Three acronyms for what looks like one job is confusing, and agencies often use that confusion to sell three separate packages. This guide sets out what each term really covers, where they overlap, where they differ, and how to split your time and budget between them. Where we give a definition we link to the full guide, so this page stays focused on the comparison.

The three terms in one minute

	SEO	AEO	GEO
Full name	Search engine optimization	Answer engine optimization	Generative engine optimization
Main goal	Rank pages and earn clicks	Be the direct answer	Be cited in an AI-written answer
Where it shows	Search results lists	Featured snippets, People Also Ask, voice replies, AI answers	Google AI Overviews and AI Mode, ChatGPT search, Perplexity, Copilot
Success looks like	Position, traffic, conversions	Answer ownership, impressions, brand exposure	Citations, mentions, referral visits
Core skill	Technical health, relevance, authority	Answer-first writing and structure	Extractable facts, clear entities, corroboration
Maturity	Two decades of practice	Roughly a decade of practice	Early, changing quickly

For depth on each, see our guides to SEO, answer engine optimization and generative engine optimization.

What Google says about the labels

Google has addressed these terms directly. In its guide Optimizing your website for generative AI features on Google Search, it explains that AEO and GEO are terms used for work aimed at AI search experiences, and that, from its perspective, optimizing for generative AI search is still SEO. It advises reviewing its guidance on evaluating third-party SEO advice before buying "AEO" or "GEO" services, and it lists tactics to ignore for Google Search: llms.txt files, content "chunking", rewriting just for AI, inauthentic mentions and over-focusing on structured data.

We think that is a fair frame for choosing between the three terms. For Google, they are one discipline. For ChatGPT search and Perplexity, the access rules and the behaviour differ, which is why separate checks still make sense. The labels are shorthand for different places your content can appear, not three unrelated skills.

How they overlap, which is most of it

The honest answer to "which one do I need?" starts with what they share. Google's own guidance on AI features says the same foundational SEO best practices apply to AI Overviews and AI Mode. Its technical requirements are that a page is indexed and snippet-eligible and that the site is included in generative AI features in Search Console. All three disciplines depend on:

• Crawlable, indexable pages that return a 200 status and are not blocked.
• Helpful, original content that satisfies the searcher. Google's own phrase is people-first content.
• Clear structure with sensible headings, lists and tables.
• Trust signals such as named authors, sources, accurate business details and a reputation beyond your own site.
• Good page experience across devices.

If those five are weak, no acronym will rescue you. If they are strong, the differences below are refinements, not separate projects.

Where they differ, in practice

The unit that gets chosen

SEO ranks whole pages. AEO and GEO choose passages. A page with a mediocre intro and one excellent, self-contained answer further down can lose in SEO and still win a snippet or a citation. This is why answer-first writing matters more for AEO and GEO than for classic SEO.

What counts as a win

SEO wins are measured by position and traffic. AEO wins can be zero-click: a person gets the answer from the results page and never visits. GEO wins can be a named mention inside a paragraph that no one clicks. Because the value changes, so do your metrics. We return to measurement below.

How much you control

You control your page. You do not control the answer layer. Google says you cannot mark a page as a featured snippet, and no AI engine publishes a citation formula. SEO has the most mature tools and the clearest feedback. AEO has partial feedback. GEO has the least, so honest expectations matter most there.

Who the audience is

SEO serves a person who reads a list and decides. AEO serves a person who wants one answer fast, often on a phone or by voice. GEO serves a person who asks a longer, more conversational question and wants a synthesised reply, which can include comparisons and recommendations. Google notes that AI Mode is especially helpful for queries that need exploration, reasoning or complex comparisons.

The role of off-site signals

All three benefit from authority, but GEO appears to lean on it most because a model that must name a recommendation tends to prefer entities that several credible sources agree on. That is an inference from how these systems behave, not a published rule, so treat it as a strong working assumption.

Where the three terms came from

Knowing the history explains why the vocabulary overlaps. SEO is the oldest term, from the era when search was a list of ten links and the work was about crawling, relevance and links. AEO grew as search engines began answering questions directly with featured snippets, knowledge panels and voice assistants, so people started writing for the answer box. GEO was named formally in the 2023 research paper GEO: Generative Engine Optimization (accepted to KDD 2024), written as AI products began composing answers from several sources.

Each term appeared because a new kind of result needed a new kind of attention, not because the old work stopped mattering. That is why a competent SEO already does much of the work for the other two, and why a provider who treats them as unrelated products should be questioned.

One page, three layers: a worked example

Here is an invented example to show how the layers stack on a single page. A Manchester accountancy firm has a page about "how much does an accountant cost for a limited company". It is illustrative, not a client result.

Layer 1: SEO

The page is indexed and fast. It targets one clear topic, has a descriptive title, links to the firm's limited company service page and is linked from the main accounting guides. The page covers the topic fully: what drives fees, typical fee structures, what is and is not included, and how to compare quotes.

Layer 2: AEO

Under the heading "How much does an accountant cost for a limited company?" the first lines give a direct answer, including the factors that move the price, without quoting a number the firm cannot support. A table compares fixed-fee, monthly and hourly pricing with who each suits. A short numbered list explains how to get comparable quotes.

Layer 3: GEO

The firm names its own pricing bands with a date, links to the official guidance for any tax rule it mentions, uses the same firm name and location everywhere, and has accurate profiles on directories and review sites. It allows search crawlers in robots.txt and checks its firewall. Each month it asks twenty cost and comparison questions in several AI tools and records which sources are cited.

Notice that the same page and the same writing carry all three layers. No separate page was created for "GEO" or "AEO". That is the model to aim for.

Who does what in a team

Task	Usually owned by	Needed for
Crawling, indexing, speed, bot access	Technical SEO or developer	All three
Question research and page ownership map	SEO strategist or content lead	All three
Answer-first writing and structure	Writer or editor with SEO guidance	AEO and GEO
Fact checking and sources	Subject expert plus editor	GEO and trust for all
Off-site mentions, reviews and profiles	PR or link building, plus the business	GEO mainly, authority for all
Measurement and prompt panel	Analyst or SEO	All three

In a small business one person may do all of it. The table is useful as a checklist of jobs that must be covered, even if you cover them yourself.

When to prioritise clicks and when to prioritise visibility

As answers get better, some queries produce fewer clicks. That does not make them worthless, but it changes how you decide where to invest.

Type of query	What the searcher wants	Your priority
Simple facts and definitions	A quick answer	Visibility and brand. Expect fewer clicks. Use these pages to build trust and link to deeper resources.
Comparisons and "best" questions	A shortlist to evaluate	Be named accurately. These influence decisions even without a click.
Transactional queries	To buy or book	Clicks and conversions. Keep strong, fast landing pages.
Tools and templates	Something to use	Clicks. An answer cannot replace a calculator or download.

If you give people a reason to visit that an answer cannot satisfy, such as a tool, original data or a worked template, you keep traffic that summaries cannot take.

A simple scorecard to rate your own site

Score each line from 0 (not true) to 2 (fully true). A total below 10 out of 24 suggests you should fix foundations before anything else.

Check	Layer
Key pages indexed and returning 200	SEO
Site loads quickly on mobile	SEO
Each topic has one owning page, with no competing duplicates	SEO and AEO
Sections open with a direct answer	AEO
Comparisons use tables and processes use numbered steps	AEO
Snippet settings do not block display	AEO and GEO
Search bots are allowed through robots.txt and firewall	GEO
Numbers are dated and linked to their source	GEO
Business name and details are consistent everywhere	GEO
Credible third parties mention you accurately	GEO
You keep a monthly prompt panel	GEO
You track conversions, not only traffic	All

A twelve-month roadmap

Months	Focus	Outcome
1 to 2	Technical health, bot access, page ownership map, baseline	A clean foundation and a starting measurement
3 to 5	Rewrite and consolidate the top revenue pages answer-first, merge competing pages	Clear, authoritative pages for each core topic
6 to 8	Fill content gaps with original data and comparisons, build earned mentions	Material other sites can cite
9 to 12	Refresh fast-changing pages, expand to adjacent topics, review the scorecard	A maintained, defensible position and a clear next plan

Those timelines are planning guidance from experience. Results depend on competition, existing authority and how much of the work you can ship.

Which one comes first

The order is almost always the same.

1. SEO foundation. Fix crawling, indexing, speed, architecture and the pages that matter most to revenue.
2. AEO structure. Rewrite key sections answer-first, in the right shape for each question.
3. GEO signals. Add attributed facts, unambiguous entities, bot access for AI search crawlers and off-site corroboration, then measure with a prompt panel.

You can run steps two and three on the same pages in the same sprint. The reason to keep the order is practical. Rewriting wording on a page that Google has not indexed, or on a site that blocks AI crawlers, wastes the work.

Side-by-side tactics

Task	SEO	AEO	GEO
Indexing and crawling	Essential	Essential	Essential, plus AI search bots
Keyword and topic research	Target terms and clusters	Question mapping, one owner per question	Sub-question coverage across a topic
On-page writing	Match intent, cover the topic	Direct answer in first 25 to 60 words	Self-contained passages with attributed facts
Structured data	Where it matches the page	Optional, must match visible content	No special markup required, per Google
Links and mentions	Links build authority	Authority helps selection	Independent mentions corroborate you
Measurement	Rankings, traffic, conversions	Snippet ownership, question impressions	Prompt panel, AI referrals, bot logs
Typical time to see movement	Months	Weeks to months	Weeks to months, varies by engine

What about AI search bots and robots.txt

This is the one place where GEO adds a concrete technical task that classic SEO does not. OpenAI documents separate crawlers for search and for model training. OAI-SearchBot is the one used to surface sites in ChatGPT's search features, and sites that opt out of it will not be shown in ChatGPT search answers. Perplexity documents PerplexityBot for surfacing and linking sites in its results. Google controls access to AI Overviews and AI Mode through the same Googlebot access that governs normal Search. You can allow search visibility and still choose a different policy for training crawlers. Sources: OpenAI's crawler overview, Perplexity's crawler overview and Google's AI features guidance.

Choosing your emphasis by business type

The mix changes with how customers find you. These are illustrative profiles, not case studies.

Business	Where to lean	Why
Local service firm (dentist, solicitor, trades)	SEO and local, with AEO for voice and "near me" questions	Customers search locally and often by voice. Profile accuracy and reviews matter most.
B2B software or agency	All three, with strong GEO	Buyers ask AI tools to shortlist vendors and compare options before they ever visit.
Online shop	SEO first, AEO for product questions	Category and product pages drive sales. Answers on sizing, delivery and returns help.
Publisher or educator	AEO and GEO, with a plan for fewer clicks	Information queries are the ones answer boxes and AI summaries satisfy directly.
Impulse-buy consumer brand	SEO plus social, light AEO	Discovery happens in feeds more than in questions.

How to split time and budget

There is no universal ratio, but a sensible starting point for a business that already has a working site is:

• About half on SEO fundamentals and content that earns revenue.
• About a quarter on AEO structure: rewriting top pages answer-first and cleaning up duplicate or competing pages.
• About a quarter on GEO: bot access, source-backed facts, entity consistency, off-site mentions and the prompt panel.

If your site has serious technical problems or very little content, shift almost everything to the first bucket until it is sound. These are planning guidelines from experience, not research findings.

Measuring all three without confusing yourself

Keep three simple views.

1. Search Console: clicks, impressions and position for target pages and question-style queries, plus the Generative AI performance report for impressions in AI Overviews and AI Mode. The AI report has no click data.
2. Analytics: sessions from AI referrers, plus conversions from organic and referral traffic.
3. Prompt panel: a fixed list of questions, checked monthly across engines, noting citations and competitors.

Do not combine them into one number. Each answers a different question, and AI answers vary between runs.

Questions to ask a provider

If you are buying help for any of the three, these questions separate real method from marketing.

1. What exactly will you change on my site in the first 30 days?
2. How will you check that search bots can reach my pages, and for which engines?
3. How do you decide which page owns which question, and how do you avoid pages competing?
4. Where do the numbers and claims in your content come from, and who checks them?
5. How do you measure AI visibility, given that answers vary between runs?
6. Which of my results will you report on: traffic, enquiries or revenue?
7. Do I own the content, the accounts and the data if we stop working together?
8. What do you not do, and what would make you advise me not to spend more?

A confident provider answers these plainly. Be wary of replies that rely on secret methods or guarantees.

What a combined report should look like

A useful monthly report brings the three layers together on one page without blending their numbers.

• Outcome: enquiries or sales from organic and AI referral traffic, with the change from last month.
• SEO: clicks, impressions and position for priority pages, plus any technical issues found and fixed.
• AEO: question queries gained or lost, snippets held, pages rewritten this month.
• GEO: prompt panel results across engines, new citations and mentions, bot access status and any inaccuracies found.
• Next month: the three highest-value actions and the reason for each.

Common confusions, cleared up

• "GEO makes SEO obsolete." No. Google's guidance says SEO best practices remain relevant for AI features, and AI answers still use indexed web pages. We examine the wider question in whether AI is replacing Google Search.
• "You need special schema for AI." Google says there is no special schema or file required for its AI features.
• "AEO is just FAQ schema." FAQ markup was one tactic and its rich results have been scaled back. AEO is mostly writing and structure. See our note on FAQ rich results.
• "Each acronym needs a separate agency." Usually not. One team should handle all three on the same pages, or you risk duplicated pages that compete with each other.
• "A citation guarantee is possible." No honest provider can promise one.

Red flags when buying help

• Guaranteed citations or guaranteed number-one rankings.
• Three separate retainers for work that touches the same pages.
• A secret technique with no explanation.
• Reporting that shows only activity, such as pages published, and never traffic, enquiries or revenue.
• Promises of instant results from a file or a plugin.

If you are comparing providers, our roundup of AI SEO and GEO agencies sets out how we evaluate providers and what to ask them. KwiqRank is an agency, so read that page's methodology with that in mind.

What you should not change when you add GEO and AEO

A frequent mistake is to damage a page that already ranks while trying to make it friendlier to answer systems. Before rewriting a page that earns traffic today, protect what works.

• Keep the URL unless there is a strong reason to move it, and redirect permanently if you must.
• Keep the sections that rank. Add a clear answer at the top of a section rather than deleting the detail below it.
• Keep internal links in place, and add new ones rather than replacing the old.
• Change one page type at a time and compare against similar pages you did not touch, so you can see what the change did.
• Record the date of each edit, so you can match traffic changes to your actions and not to guesses.

A practical checklist you can use today

1. Is each important page indexed, returning 200, and free of unintended noindex or nosnippet?
2. Do your robots.txt and firewall allow Googlebot, OAI-SearchBot and PerplexityBot if you want visibility in those products?
3. Does each key section lead with a direct answer?
4. Does each question have exactly one owning page?
5. Are numbers attributed, linked and current?
6. Is your business name, location and service wording consistent everywhere?
7. Do credible third parties mention you accurately?
8. Do you have a baseline prompt panel and a monthly reminder to run it?

Related reading

See the Google-specific detail in Google AI Overviews optimization, the engine guides for ChatGPT search and Perplexity, and our note on zero-click searches.

What to do next

Treat the three acronyms as layers of one plan. Fix the foundation, structure the answers, then add the signals that help AI systems trust and cite you. If you would like a short audit that scores your site on all three layers, our team in Manchester and Mumbai offers it through AI SEO services, and you can get in touch to talk through your situation.