What is the main difference between AEO and SEO?

SEO optimises pages to rank in Google's ten organic blue links through technical health, keywords, and backlinks. AEO structures content so AI systems and search engines can extract a direct answer and surface it in featured snippets, AI Overviews, and People Also Ask boxes. According to Semrush, AI search visitors convert at 4.4 times the rate of traditional organic visitors, making AEO increasingly important for high-quality traffic.

Does AEO replace traditional SEO?

No. AEO and SEO are complementary. Traditional SEO builds the domain authority and technical foundation that makes pages indexable, which is a precondition for AEO. A page that cannot be crawled cannot appear in featured snippets or AI Overviews. Most AEO techniques such as question headings, direct answer sentences, and FAQ schema also improve traditional SEO signals simultaneously.

How many Google searches now trigger AI Overviews?

As of 2025, AI Overviews appear in roughly 13 to 20% of Google searches in the United States, according to Semrush and Amsive research. Zero-click searches where users get answers without clicking any result have grown from 56% in 2024 to 69% in 2025. Optimising for AEO ensures your content captures visibility in these answer positions rather than losing clicks to AI summaries.

What are the most important AEO techniques?

The five highest-impact AEO techniques are: opening every H2 section with a direct answer sentence, phrasing H2 and H3 headings as questions your audience searches, adding FAQPage JSON-LD schema, structuring information in lists and numbered steps rather than dense paragraphs, and keeping average sentence length under 20 words for voice search readability. FAQ schema alone can improve click-through rates by 20 to 30% through FAQ rich results.

How quickly does AEO produce results?

Featured snippet and PAA positions can change within days of Google re-crawling a page. After implementing question headings, direct answer sentences, and FAQ schema on an existing page, PAA appearances within 2 to 4 weeks are not unusual. AI Overview citations take longer as they depend on the AI model update cycle, typically 4 to 8 weeks for measurable changes in tools like Perplexity.

AEO vs SEO: Optimise for AI Search Engines (2025 Guide)

⏱ 2 min read·May 1, 2026

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Quick Answer

Answer Engine Optimisation (AEO) is the practice of structuring content so AI systems can extract and cite it as a direct answer. The three core elements are: direct answer sentences at the start of each section, FAQPage schema markup, and explicit entity clarity throughout the content.

Google AI Overviews, Perplexity and ChatGPT are answering questions without sending users to your site. The search result that matters is increasingly not the blue link at position 1: it is the AI-generated summary above all the links, the featured snippet, or the People Also Ask box.

What Changed

Until 2023, winning a featured snippet was a nice bonus on top of a good ranking. Since Google’s rollout of AI Overviews in 2024, it has become a primary traffic channel in its own right. AI Overviews appear for informational and educational queries where featured snippets already dominated. The combined effect is that the top organic position for a high-intent informational keyword now captures significantly less CTR than it did two years ago.

AI search engines like Perplexity add a third dimension: they answer queries by synthesising multiple sources, with citations that drive traffic back to the original content. Appearing as a Perplexity source generates less traffic than a traditional search click but builds brand recognition and authority in AI-generated answers across the web.

AEO Techniques That Work

Structure every section around a question. The H2 or H3 heading should be the question. The first sentence after the heading should be the direct answer. Everything that follows expands the answer.

Add FAQPage schema. This is the highest-ROI structured data implementation for AEO. Each question and answer must be visible in the page HTML, not hidden behind an accordion or tab, and the schema text must exactly match the visible text.

Use specific numbers. “CTR increases by 30% with schema” is extractable. “CTR improves significantly with schema” is not. LLMs and featured snippet algorithms both prefer specific, attributable claims.

Tools for Both AEO and SEO

DotTheta’s seven free tools cover the complete workflow. Use Keyword Hunter to find informational keywords where AI Overviews appear. Use Outrank AI to generate content briefs with PAA questions as H2 headings. Use Prism SEO to audit existing pages for AEO readiness and get a prioritised fix list.

📌 Key Facts

Google AI Overviews appear in 15-25% of searches as of 2025
FAQPage schema increases AI citation probability by ~40%
Content with specific statistics is cited 33% more by AI systems (KDD 2024)
Sites optimised for AEO see 60-80% of traditional click loss offset by brand visibility

Written by

DotTheta

SEO practitioner and founder of DotTheta. Built tools used by 5,000+ marketers.