Perplexity now serves over 100 million queries per month. ChatGPT Search has millions of daily users. Google AI Overviews appear on roughly 15% of all searches. The traffic going to traditional blue-link results is shrinking. The traffic going to AI-generated answers is compounding.
SEO optimises for ranking. AEO — Answer Engine Optimisation — optimises for citation. They use different signals, reward different content formats, and require different strategies. Most marketing teams are still only doing one of them.
What Answer Engines Actually Want
ChatGPT, Perplexity, and Claude all work from a similar playbook: retrieve candidate sources, rank them for relevance and reliability, synthesise a direct answer, and cite the sources used. The question is not whether your content ranks — it is whether it gets retrieved and trusted.
Three signals determine this. First: does your content directly answer the question being asked? AI engines prefer pages that lead with the answer rather than building up to it. Second: is your content factually specific? Vague claims get ignored. Pages with data, dates, and precise figures get cited. Third: is your content trusted by other authoritative sources? Backlinks from credible domains increase citation likelihood significantly.
The Format Difference Between SEO and AEO Content
Traditional SEO content is built for humans to read top to bottom. AEO content is built for a model to extract a direct answer in 2–4 sentences. These are different writing disciplines.
SEO content often buries the answer in context. AEO content puts the answer in the first paragraph, then supports it. SEO content uses keyword density. AEO content uses entity density — specific names, numbers, relationships. SEO content can be 3,000 words on a topic. AEO content is often best when a single focused page answers one question completely.
Practical format rules for AEO:
Structure pages around a single question. Use the question as your H1 or H2. Answer it directly in the first paragraph — no preamble. Follow with supporting evidence: data, examples, named sources. Use short paragraphs. One idea per paragraph. Use H2s as sub-questions, not topic labels.
Schema Markup and Why It Matters
Schema markup tells answer engines what kind of content they are reading. FAQ schema is the highest-value format for AEO — it directly maps to the question-answer retrieval pattern. HowTo schema works well for process content. Article schema with author credentials and publication date improves trust signals.
A page with FAQ schema covering a specific question is substantially more likely to be cited than a semantically equivalent page without it. Implementing this across your content library is one of the highest-ROI AEO moves available.
What SEO Gives You That AEO Does Not
SEO still drives the majority of organic traffic. Users who click a search result browse your site, see your offer, and convert. An AI citation gives you visibility and authority but no guaranteed click. For transactional queries — "best [product] for [use case]" — SEO still wins on conversion.
The smart play is to run both. SEO for traffic and conversion. AEO for authority, brand recognition, and the growing share of queries that never result in a traditional click. These are not competing strategies. They share most of the same infrastructure: good writing, strong backlinks, technical health. AEO adds format discipline and schema on top.
Where to Start
Audit your existing content for question-answer pairs. Any page that covers a topic people ask about can be reformatted for AEO. Add FAQ schema to your top-traffic pages. Write new content specifically designed to answer specific questions your ICP types into AI engines — not just Google. Check your existing citations in Perplexity and ChatGPT by searching for your main topics. See who is already getting cited. Reverse-engineer their format.
The window where AEO is a competitive advantage rather than table stakes is closing. The teams building it now are accumulating citation authority that will compound.