AEO vs SEO: Key Differences and How to Win at Both

The question comes up constantly: should I focus on SEO or AEO?

The honest answer is: you cannot afford to ignore either. But they are different enough games that treating them as the same discipline will leave gaps in both.

STAT: AI search engines now influence 40% of commercial queries in the US, up from under 5% in 2023. Source: Gartner Digital Markets, 2025

The fundamental difference

SEO is about winning a position in a ranked list. The user gets ten options and chooses. Traffic comes from clicks. AEO is about being selected as the answer. The user gets one synthesised response. If you are in it, you get a citation impression and sometimes a click. If you are not, you get nothing.

That winner-takes-most dynamic changes everything about how you should invest.

QUOTE: "The game has shifted from 'how do I rank higher?' to 'how do I become the source AI trusts?' Those are very different questions with very different answers." — Aleyda Solis, International SEO Consultant

How the signals differ

Backlinks vs brand mentions

SEO prioritises backlinks — third-party links that pass PageRank. AEO prioritises brand mentions — how often your brand is discussed across the internet, in what context, and in what quality of venues.

STAT: Brand mentions on Reddit and Hacker News correlated 0.71 with AEO citation rates in a study of 200 B2B SaaS brands — stronger than any on-page SEO signal. Source: CiteAgentic Research, 2025

Keywords vs questions

SEO content is written around keyword clusters with search volume. AEO content is written around questions — the actual phrases buyers type into Perplexity or ChatGPT.

Rankings vs citation share

Metric	SEO	AEO
What you measure	Keyword position (1–100)	Citation % per prompt (0–100%)
How often you measure	Daily / weekly	Weekly / monthly
Tools	Ahrefs, SEMrush, GSC	CiteAgentic, manual prompt runs
What moves it	Backlinks, content updates	Schema, off-site mentions, freshness
Time to see impact	2–6 weeks	4–12 weeks

Where SEO and AEO overlap

TAKEAWAY: You do not need two separate content strategies. High-quality, well-structured content wins both. The difference is in format, measurement, and distribution — not in the underlying quality bar.

Technical health matters for both. A slow site, broken crawl, or thin content hurts SEO rankings and AEO citation rates in parallel.

E-E-A-T feeds both. Google's Experience, Expertise, Authoritativeness, and Trustworthiness framework matters for traditional search. LLMs have similar priors — they prefer citing sources that are demonstrably authoritative and accurate.

Structured data helps both. Schema markup improves rich snippet eligibility for SEO and citation legibility for AEO.

Where the strategies diverge

Dimension	SEO strategy	AEO strategy
Content focus	High-volume keywords	Buyer question clusters
Format	Long-form pillar content	Structured Q&A + chunked sections
Link building	Acquire backlinks to domain	Earn brand mentions in communities
Freshness	Annual updates on evergreen	Quarterly refresh on cited pages
Distribution	Internal links + sitemaps	llms.txt + structured data

RESEARCH: Brands that maintained both an active backlink acquisition program and a community presence program outperformed single-strategy brands on both SEO and AEO metrics by an average of 2.3× after 12 months. Source: Moz / CiteAgentic Joint Study, 2025

A practical two-track approach

Run them in parallel with different content types:

SEO track: Monthly pillar articles targeting high-volume keywords. Optimise for rankings and clicks. Measure in Ahrefs or GSC.

AEO track: Weekly shorter-form articles answering specific buyer questions. Structure every post with FAQ schema. Measure citation share in CiteAgentic.

The SEO articles build domain authority that feeds AEO. The AEO articles build topical authority that lifts SEO. They compound.

FAQ

Should I hire an SEO specialist or an AEO specialist?

Most experienced SEOs are rapidly acquiring AEO skills. The fundamentals overlap significantly. If you are hiring today, look for someone who understands both structured data and community-based brand building — these are the two biggest AEO differentiators from traditional SEO.

Which drives more direct revenue — SEO or AEO?

At the top of the funnel, AEO drives brand awareness that influences purchase decisions before a prospect ever clicks on your site. At the bottom of the funnel, SEO still drives more attributable clicks. Both matter; the mix depends on your sales cycle length.

Can I do AEO without doing SEO first?

Yes, but SEO helps. Domain authority from SEO increases the probability that your pages get retrieved by live-retrieval engines. Starting with AEO-first (structured content, schema, llms.txt) and adding SEO progressively is a valid approach for new sites.