Why SEO Matters for AI Search

Learn why SEO remains essential for AI search. Combining traditional SEO with AI optimization boosts visibility in ChatGPT, Google AI, and other platforms.
Lawrence Hitches
August 28, 2025

Why SEO Matters for AI Search

You have seen the “SEO is dead” takes.

They are wrong. AI search has changed the surface, not the foundations.

If you want visibility in ChatGPT, Perplexity, and Google AI Overviews, you still need classic SEO, plus cleaner answers and tighter structure.

Summary


  • SEO is the foundation. GEO builds on top of SEO.
  • GEO is a sub-service of SEO, not a separate product.
  • AI systems pre-select high-ranking pages, extract passages, then generate.
  • Query fan-out pulls in sources from related sub-queries.
  • The focus shifts from “best page” to “best answer.”
  • Keep one workflow. Do not split SEO and AI search into separate teams.

SEO first. GEO on top.

You cannot do GEO without starting with SEO. It sits inside technical audits, content strategy, link acquisition, and schema. AI tools rely on SEO to find, index, rank, and cite content. If your site is slow, unstructured, or inconsistent, AI systems will not use it.

  • ChatGPT uses Bing Search.
  • Google’s AI Mode uses Google Search.
  • Perplexity searches the web live and cites sources.
  • Claude can search when browsing is enabled.
SEOs now manage two organic surfaces:

  1. Traditional Search. Classic result pages with ranked links.
  2. Organic AI-Driven Results. Answers from LLMs across chat, search modules, browsers, and assistants.

You need presence in both. The inputs overlap. The process should be one.

How AI search works

Most products follow the same steps.

  1. User asks a question.
  2. The LLM rewrites the question into multiple sub-questions. This is the “fan-out.”
  3. Each sub-question runs through a traditional search engine. ChatGPT routes to Bing. Google AI Mode routes to Google.
  4. The engine returns ranked results. Standard SEO signals apply.
  5. The LLM extracts passages, tables, and facts.
  6. It composes a summary and adds citations.
This explains why SEO still sets eligibility. If your content is not crawlable, not indexable, or not competitive, it will not reach the extraction step. If your passages are vague, the model will skip them. If your facts are inconsistent across the web, you will lose trust.

Example fan-out

Question: “What are the pros and cons of electric cars vs hybrid cars for commuting in a city like Atlanta?”

Likely sub-queries:

  • advantages of electric cars city driving
  • disadvantages of electric cars range anxiety
  • hybrid car fuel efficiency in traffic
  • EV charging infrastructure Atlanta
  • cost comparison EV vs hybrid 2025

The model can only answer well if the underlying search results for those sub-queries are strong. That is the SEO job. GEO then ensures your sections are extractable and cite-ready.

Traditional rankings still matter

AI systems do not start from a blank slate. They reduce the problem first by fetching a small pool of likely sources. That pool looks a lot like the top results for the main query and close variants. If you are in the top ten, your odds of being cited rise. If you hold the top spot, your odds rise again. The exact numbers vary by query and platform. The direction is consistent.

This is not new. Links, authority, and quality content improve position. Strong positions increase impressions. Today those impressions include AI modules and chat answers. Ranking power compounds across both. The practical move is simple. Defend top ten on the head term. Earn top ten on the sub-topics that feed the answer.

Why you still see sources outside the top ten

You will see pages that do not rank for the head term appear in AI answers. Common reasons:

  • Personalisation and caching. Results differ by user and context. Location, device, history, and short-term re-ranking change the set. Cached snapshots can reflect an older index.

  • Query fan-out. The system runs several related searches. Passage relevance for a sub-question can outrank general relevance for the head term. If you rank top ten for “battery life test iPhone 15,” you can appear in an answer to “iPhone 15 battery life compared to iPhone 14,” even if you do not rank for “iPhone 15.”

  • Freshness windows. Recent, well-structured updates can enter the pool for time-sensitive questions. A current table or changelog can beat an older authority page that has not been updated.

  • Takeaway. Do not chase only the head term. Map and cover the sub-queries with real depth and clean structure.

The shift: from best pages to best answers

Keep your comprehensive pages. AI search extracts at the passage level. You will not be cited if the only mention of the answer sits in a long paragraph with vague wording. The model prefers short, direct answers that line up with the question text, followed by compact detail that supports the claim.

Design for extraction:

  • One question per section.
  • A short plain answer first.
  • Supporting detail that stands on its own.
  • A named anchor for deep links.
  • Matching schema where relevant.
  • Consistent units, versions, and entity names.

Answer block template

  • H2: the exact question.
  • TL;DR: two to four sentences with the direct answer.
  • Detail: one short paragraph, a tight table, or a brief list.
  • Source: cite the original dataset, method, standard, or documentation when relevant.
  • Anchor: #question-variant so AI and users can land on it.

What Google and others say

Google confirms that content which ranks well in traditional search is eligible for AI Overviews. There are no special AI tags. You need strong SEO. See Google’s guidance: https://developers.google.com/search/docs/appearance/ai-features

ChatGPT uses Bing. Bing shares many ranking concepts with Google. Market share differs. The implication is the same. SEO is essential. A GEO layer makes your content easier to extract and cite.

The practical playbook

1) Map query fan-out for each topic

Start with the head term. List eight to fifteen real questions people ask. Pull from People Also Ask, internal search, support tickets, sales calls, and forums.

Cover:

  • Definitions and basics
  • Comparisons and alternatives
  • Specs, limits, and compatibility
  • How-to and troubleshooting
  • Pricing and availability
  • Local and regulatory variants
Write each question as a natural sentence. Note the core entity, the metric, and the decision criteria. This drives section structure.

2) Create answer nodes on existing pages first

Do not create dozens of thin URLs. Add focused sections to hubs or core pages. Spin out a new page only when the intent needs depth or a unique angle.

  • Link from the hub to each section with descriptive anchors.
  • Add a “Back to summary” link.
  • When a section grows large, split it into a focused page with its own table of contents and anchors.
  • Redirect old anchors to new anchors to preserve entry points and to fix AI deep links.

3) Structure for passage discovery

Make the right snippet easy to extract.

  • Short paragraphs. Clear H2 and H3 headings that match questions.
  • TL;DR blocks at the top of key sections.
  • Tables with labelled columns and units for specs and comparisons
  • Lists for steps and requirements. One action per line.
  • Stable named anchors on every answer node.
  • Descriptive figure captions that restate the claim.
  • Avoid vague language. State numbers, thresholds, and conditions.

4) Strengthen entity and schema

AI needs consistent facts across copy, schema, and profiles.

  • Use Organisation, Product, FAQ, HowTo, Author, and Review schema where it fits.
  • Align brand names, addresses, and identifiers across the site, schema, Google Business Profile, Wikidata, and major listings.
  • Mark up dates, versions, and measurements with correct properties and units.
  • Keep author bios and credentials current. Add sameAs links to official profiles.
  • Remove outdated duplicates and resolve conflicting entries.

5) Ship feed-level surfaces

Structured feeds are easier to crawl than heavy pages.

  • Product feeds with price, availability, specs, and regional variants.
  • Article and video sitemaps that update on publish.
  • Correct lastmod and meaningful changefreq.
  • Public CSV or JSON when it supports claims. Link to it from the page.
  • Keep feed URLs stable. Document fields and meanings.

6) Improve access and speed

Slow, opaque pages lose to faster, cleaner sources.

  • Render primary content in HTML.
  • Reduce blocking scripts and hydration delays.
  • Keep CSS and JS lean. Avoid hiding text behind interactions.
  • Pass Core Web Vitals on key templates.
  • Remove accidental blockers in robots rules and headers.
  • Serve cacheable images with width and height set.

7) Keep it fresh with real updates

AI systems check live data. Stale content drops out.

  • Set a cadence for top topics. Monthly or quarterly is fine.
  • Log changes on the page. Add “Last updated” with a brief note.
  • Bundle minor edits into periodic publishes to send a clear freshness signal.
  • For news or release notes, add a change log section with anchors.
SEO activity How it helps AI search
Internal links, content depth Groups related content so models can build better answers
Schema markup Supports citations in ChatGPT and Google AI
Lists, tables, TL;DRs Easier for models to quote and attribute
Brand mentions, digital PR Builds authority and trusted references
Technical SEO, Bing indexing Essential for ChatGPT visibility
Semantic audits Matches how LLMs assess relevance and entitles

Measurement

Start by tracking when your pages appear in AI answers. Log the query, page, position, and date. Put it all into a simple dashboard so you can spot trends by platform.

In your analytics, track AI referrals using regex filters on user agents and referrers. Segment engagement and revenue by AI source to see which topics actually convert.

Check for 404s coming from AI. They usually point to dead links or missing anchors. Add redirects or anchors, and keep your canonical URLs stable.

List each topic’s head term and sub-questions. Make sure you’ve got:

  • An answer section
  • A top-10 ranking
  • Any AI citations 

Use that to plan content sprints. Cut anything that doesn’t answer a clear question.

Watch Core Web Vitals, crawl errors, and how fresh your sitemap or feed is. Fix template issues first. Feeds and sitemaps should update within minutes.

Market context

AI referrals are still small but growing. Getting included early builds trust, and that compounds over time.

Google’s AI Overviews and AI Mode are reaching more users. ChatGPT picks recent, clear expert content that cites sources. Perplexity rewards structure and transparency. The trend is clear: focus on clarity, consistency, and speed.

Common pitfalls


Don’t split teams into “SEO” and “GEO.” You’ll double up on work. Use one backlog.

Thin answers without sources don’t get cited. Mismatched facts across pages, schema, and profiles hurt trust. Heavy JavaScript hides content from bots. Missing anchors break AI deep links. If your feeds or sitemaps are stale, your pages won’t get pre-selected, even if they look current.

Team and workflow

Run one workflow for SEO and AI with shared KPIs. Map the fan-out of questions for each topic. Add answers to existing pages before spinning up new URLs.

Align your schema and entities with your public profiles. Measure, fix, and refresh regularly. Short cycles work best. Keep what moves the needle, cut what doesn’t.

Bottom line

  • SEO drives AI visibility.
  • Rank for the topic.
  • Publish answers that are clear and easy to extract.
  • Keep your facts aligned, your pages fast, and your content fresh.
  • One system. Keep it simple.

No generalists here. Just damn good SEO. You can contact us here. 

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