Search is changing faster than most businesses realise. ChatGPT now handles over 37 million searches per day. Perplexity passed 100 million monthly active users in early 2025. Google's AI Overviews now appear on roughly 15% of all US searches and are expanding globally. When a user asks one of these tools a question, it cites sources. Either your business is one of those sources, or a competitor is.
That is what Answer Engine Optimisation (AEO) addresses. It is the discipline of structuring your content, authority signals, and entity presence so that AI systems cite you when answering questions your ideal customers are asking.
AEO vs SEO: What Is the Difference?
Traditional SEO optimises for ranking positions on a search results page. A user searches, sees ten blue links, and clicks one. The metric is click-through rate and ranking position.
AEO optimises for citation. An AI system processes a question, synthesises an answer from multiple sources, and attributes the response to those sources. The metric is whether your content gets cited, not whether you rank at position three.
The two disciplines overlap significantly. Strong SEO fundamentals, clear authority signals, and well-structured content all feed into AEO performance. But AEO adds a layer of requirements that traditional SEO does not cover.
Why AEO Matters More Now Than It Did Two Years Ago
In 2022, if someone searched "best AI automation agency in Australia", they would see a list of results and click through to websites. Today, the same search on ChatGPT, Perplexity, or Google with AI Overviews enabled returns a synthesised answer that names specific agencies.
The businesses named in that answer get warm, pre-qualified traffic without spending on ads. The businesses not named get nothing from that query.
The shift is structural. AI tools do not just surface links. They generate trust. When ChatGPT says your agency is a recommended option, that carries authority a third-party review site struggles to match. Users trust the synthesis over the list.
According to Ahrefs, AI Overviews appear for up to 84% of informational queries in some categories. If your content is not structured for citation, you are invisible to a large and growing share of research-mode searches.
How AI Answer Engines Decide What to Cite
Understanding the mechanics helps. AI systems like Perplexity, ChatGPT (browsing mode), and Google's Gemini-powered AI Overviews use a combination of factors to select sources:
- Topical authority: does your site comprehensively cover this subject area?
- Entity recognition: is your brand, person, or organisation a recognised entity in the knowledge graph?
- Structured data: is your content marked up with Schema.org vocabulary so machines can parse it?
- Answer format: does your content directly answer specific questions in clear, concise language?
- Freshness: is your content recent and regularly updated?
- Backlink authority: do credible sources link to your content on this topic?
Traditional SEO has always cared about backlinks and freshness. AEO adds the imperative of answer format, entity presence, and comprehensive topical coverage as first-class requirements.
Five AEO Tactics That Actually Move the Needle
1. Write for Questions, Not for Keywords
Keyword-first content optimises for matching a search string. Question-first content optimises for answering intent. AI systems are reasoning engines. They interpret questions, not strings.
For every piece of content you write, map the underlying question your target customer is asking. Make that question explicit in your heading. Answer it directly in the first two sentences after the heading. Then expand with detail, context, and evidence.
This structure, known as answer-first formatting, mirrors the way AI systems synthesise information. When a model is looking for a source to cite for "what is AEO", it favours content that states the answer cleanly at the top rather than burying it after three paragraphs of context.
2. Build Topical Clusters, Not Isolated Articles
A single article on AI automation does not establish topical authority. A cluster of fifteen articles covering AI automation from every angle, tools, use cases, implementation steps, cost analysis, case studies, comparisons, does.
AI systems assess whether a source is genuinely authoritative on a topic before citing it. A site with one article on SEO and fifty on unrelated subjects will rarely be cited as an SEO authority. A site with a deep, internally linked cluster on SEO has a much stronger signal.
Plan your content as a topic map first. Identify the pillar topic and the cluster articles that support it. Publish systematically, and link between them.
3. Add FAQ Schema to Every Relevant Page
FAQ schema (Schema.org/FAQPage) is one of the highest-leverage structured data implementations for AEO. It makes the questions and answers on your page machine-readable. Google's AI Overviews frequently source FAQs. Perplexity indexes them. Bing AI parses them.
Add three to eight questions per page. Make the questions match what your customers actually search. Write the answers in two to four sentences. Be specific. Avoid marketing language.
4. Establish Your Brand as an Entity in the Knowledge Graph
Google's Knowledge Graph and the entity databases that AI systems draw from prioritise recognised entities. An entity is a distinct, describable thing: a person, organisation, product, or place with consistent signals across the web.
To establish entity presence: ensure your Google Business Profile is complete and accurate, your Wikipedia or Wikidata entry exists if warranted, your social profiles are consistent, your Organisation schema includes your name, URL, logo, and contact details, and your founders are linked as Person entities with their own profiles and publications.
Entity presence is why large, well-known brands get cited even when their content quality is mediocre. They are known quantities in the knowledge graph. You can accelerate this for smaller brands by being deliberate about entity signals.
5. Get Cited by Sources That AI Systems Already Trust
AI systems are biased toward sources they already index and trust. Publications like TechCrunch, G2, Capterra, industry-specific directories, and regional news outlets are frequently cited. When those publications reference your brand, AI systems learn to associate your brand with the topic being discussed.
This is the AEO equivalent of link building. The goal is citation in trusted sources, not just backlinks. Guest contributions, data studies that journalists reference, and product listings in authoritative directories all contribute to this signal.
Measuring AEO Performance
AEO does not have a native analytics dashboard yet. The field is young. But you can measure meaningful proxies:
- Brand name and topic queries in AI tools: search for your category in ChatGPT and Perplexity. Are you mentioned? How prominently?
- Google Search Console: track impressions for informational queries where AI Overviews appear. A drop in clicks with stable or rising impressions often signals AI Overview displacement.
- Direct and brand traffic: AEO citations drive direct navigation. An increase in direct traffic while paid stays flat suggests growing AI-driven awareness.
- Referral traffic from Perplexity and similar sources: Perplexity does send referral traffic. Set up UTM tracking to capture it.
Track these monthly. AEO results compound over time as your topical authority grows. Do not expect overnight results. Expect a 90-day curve.
Where to Start If You Have Done Nothing Yet
If you are starting from zero, here is the sequence that delivers the fastest returns:
- 1Audit your existing content for answer-first formatting. Rewrite the top ten pages to lead with the direct answer.
- 2Add FAQ schema to your homepage, service pages, and any existing blog articles.
- 3Add Organisation and Person schema with complete, accurate entity data.
- 4Write five to ten cluster articles around your primary service area, each targeting a specific question.
- 5Get your brand listed in three to five authoritative directories in your category.
None of this is technically complex. All of it is methodical. The businesses that start now have a compounding advantage over those that wait.
The Bottom Line
AEO is not a replacement for SEO. It is an expansion of it, adding the requirements of entity presence, answer-first formatting, and topical depth to a foundation of technical SEO and backlink authority.
The businesses that invest in AEO now are building a distribution channel that will compound for years. The businesses that ignore it are ceding citations, and the trust that comes with them, to competitors who are paying attention.
If you want to get cited by AI tools, start with the content on your site. Make it answer-first, make it comprehensive, and make it structured. Then build the entity signals that tell AI systems your brand is a credible source.
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