Two disciplines. One buyer. Different measurements.
Your buyers use Google when they know what they want. They use ChatGPT and Claude when they want to know who to call. Answer Engine Optimisation (AEO) and Search Engine Optimisation (SEO) are the two disciplines that cover both. This page explains the distinction, where they overlap, and how to know if you are getting both.
Request a visibility briefingSame buyer. Different surface.
Both disciplines exist to bring buyers to your door. They diverge completely in what they measure, how they work, and what the buyer experience looks like on the other end.
- Buyer searches Google for a specific service or location
- Ten results appear. The buyer scans, clicks three, investigates one.
- Value measured in: rank position, impressions, organic clicks
- Competitor set: ten pages the engine ranks (public, visible)
- Buyer asks ChatGPT, Claude, or Perplexity: "who should I call for X?"
- Three to five businesses come back named. The buyer contacts one.
- Value measured in: citation share across AI engine answers
- Competitor set: the businesses the engine chooses to name (not always who ranks)
Not a choice. A combined approach.
Roughly two in five of the signals that improve your SEO also improve your AEO. The remaining three in five are different in shape and measured by a different instrument. The goal is to cover both surfaces.
SEO builds the foundation
Google rankings, technical health, content quality, and internal link architecture. The foundation that both disciplines share. Measured by rank position and organic traffic.
AEO makes it readable to AI
Structured data, entity recognition, knowledge supply files, and authoritative mentions. The layer AI engines use when deciding who to name. Measured by citation frequency.
Together they cover both surfaces
When both are in place, your business appears whether the buyer searches Google or asks an AI engine. The Authority Graph Audit documents your position across all four major surfaces.
Quarterly measurement of both
AI engines update their recommendation patterns in 8 to 12 week windows. The Share-of-Voice Quarterly documents what changed, what moved, and what to do next. A documented trail, not a vanity report.
Different in cadence, measurement, and what compounds.
The disciplines share a buyer. They do not share an instrument. Understanding the six axes of divergence is what separates a strategy that covers both from one that relabels SEO as AEO and calls it done.
| Dimension | Traditional SEO | Answer Engine Optimisation (AEO) |
|---|---|---|
| What it measures | Rank position across hundreds of keywords, impressions, organic clicks | Citation share: how often your business is named in AI answers to buyer-intent queries |
| Buyer behaviour | Search, scan ten results, click and investigate | Ask an engine, read one answer, contact whoever is named |
| Competitor set | The ten pages ranking for the query (public, visible) | The three to five businesses the engine names (not always the same as who ranks) |
| Content work | Titles, headings, internal links, page-level ranking signals | Page-level plus knowledge supply: entity recognition, structured data, authority mentions |
| Review cadence | Monthly traffic reports | Quarterly evidence cycles (AI engines retrain and citation surfaces shift in 8 to 12 week windows) |
| What compounds | Link graph (takes years to build; can be partly purchased) | Authority graph (named mentions in authoritative sources; cannot be purchased) |
Most businesses measure one surface. Buyers use both.
These are the numbers that define the scope of a Qyliq visibility engagement covering both Search Engine Optimisation and Answer Engine Optimisation (AEO).
Ranking in the top ten does not mean you are being recommended. The AI citation gap is real and measurable.
ChatGPT, Claude, Perplexity, and Google AI Overviews. Each with different retrieval behaviour. Each measured.
AI engines update recommendation patterns in 8 to 12 week windows. Quarterly is the right cadence to measure and act.
AI search use crossed the threshold where buyer journeys that bypass Google entirely became a measurable share of enquiries.
Practical implications for UK businesses.
You do not need to understand how AI engines work under the hood. You need to know what the gap between your search ranking and your AI citation rate costs in enquiries. These are the six things that matter.
Your SEO position and your AI visibility are not the same number
A business ranked third on Google may not appear in AI recommendations for the same query. The overlap is roughly 25%. The gap is what the Authority Graph Audit measures.
AI engines are building your shortlist without telling you
When a buyer asks ChatGPT or Claude to recommend firms in your category, a shortlist is generated. You are on it or you are not. You cannot see the query. You can only measure whether you appear in the answer.
The signals that build AI authority cannot be bought
Link graph can be partly purchased. Authority graph cannot. Named mentions in authoritative sources, structured entity data, and documented expertise compound over time. That is the work.
Monthly SEO reports do not capture AI citation movement
Standard SEO platforms track Google rankings, not the citation behaviour of AI engines. The Share-of-Voice Quarterly is the instrument that documents both on the same 90-day cycle.
Both disciplines share foundations you may already have
A business that has been disciplined about SEO arrives at AEO with the foundations partly built. Technical health, content quality, and entity recognition all transfer. The question is what the AEO layer needs to add.
The entry point is a diagnostic, not a strategy pitch
The Visibility Briefing audits your position across Google and the four major AI engines, shows you the gap, and gives you the evidence to decide what to do next. Measure first. Then advise.
What people ask about AEO and SEO
Straightforward answers. If yours is not here, ask us directly.
What is Answer Engine Optimisation (AEO)?
Do I need both SEO and AEO?
How do you measure AI visibility?
Is AEO replacing SEO?
How long does it take to appear in AI engine answers?
Find out where you stand across both surfaces
The Visibility Briefing audits your presence across Google and the four major AI engines. You see the evidence before you commit to anything.
Request a visibility briefing