Answer Engine Optimisation (AEO) is the practice of engineering your brand's visibility, citations, and recommendations inside AI-generated answers — across ChatGPT, Google AI Overviews, Perplexity, Claude, and Gemini. It is a distinct discipline from traditional search optimisation, focused on becoming the answer rather than ranking on a list.
Last updated: March 2026
The way people find information has fundamentally changed. ChatGPT now has 900 million weekly active users processing 2.5 billion prompts per day (OpenAI, February 2026). Google AI Overviews reach 2 billion users and appear in 18% of all searches (Google, 2025). Perplexity processes 35–45 million queries daily from over 45 million active users (Perplexity, 2025).
This isn't a future trend — it's the present reality. 60% of Google searches now end without a click (SparkToro, 2024), meaning the majority of your potential customers never visit a website. They get their answer directly from Google's AI Overview or from an AI chatbot.
The brands that appear in these AI-generated answers capture demand. The brands that don't become invisible — regardless of their Google ranking. Seer Interactive found that brands cited in Google AI Overviews earn 35% more organic clicks, while brands not cited see their organic click-through rate drop by 61% (Seer Interactive, 2025).
AEO sits at the intersection of content strategy, technical optimisation, and entity authority. It encompasses:
Structuring every page so AI systems can extract a direct, citable answer within the first 60 words. AI retrieval systems pull individual content blocks, not full pages. Each section of your content must function as a self-contained answer.
Implementing JSON-LD schema (FAQPage, Article, HowTo, Organisation) so AI crawlers can parse your content programmatically. Pages with FAQPage schema are significantly more likely to be cited in AI-generated responses.
Building your brand's presence across the platforms that large language models use as training and retrieval sources: Wikipedia, Crunchbase, LinkedIn, G2, industry publications, and high-authority editorial sites.
95% of ChatGPT citations come from content published or updated within the last 10 months (AirOps, 2025). Content freshness is not optional — it's a primary ranking factor for AI citation.
Each AI platform weighs signals differently. ChatGPT favours encyclopaedic depth and cross-source entity validation. Perplexity weights content freshness heavily. Google AI Overviews prioritise pages that already rank in the traditional top 10 — 38% of AI citations come from these results (Ahrefs, 2025).
Traditional search optimisation focuses on ranking your page in a list of ten blue links. AEO focuses on making your brand the answer that AI provides directly.
AEO does not replace traditional search optimisation. It extends it. The strongest AI visibility comes from brands that already have solid search fundamentals and layer AEO-specific optimisation on top.
This pillar hub connects to every resource in our AEO knowledge base:
A comprehensive definition and beginner's guide to Answer Engine Optimisation, covering how it works, why it matters, and how it differs from traditional approaches.
Read the guide →A non-technical explanation of AEO designed for business leaders and marketers who want to understand the concept without the jargon.
Read the guide →How to choose the right AEO consultant, what to expect from a consultancy engagement, and how growthvibe approaches AI visibility for its clients.
Read the guide →A detailed breakdown of the services involved in Answer Engine Optimisation, from technical audits through to ongoing citation authority building.
Read the guide →The commercial impact of AI visibility is measurable and significant:
The window for establishing AI visibility advantage is estimated at 18–24 months (Averi.ai, 2025). Brands that build citation authority now create compounding advantages that are difficult for competitors to replicate later.
Traditional search optimisation focuses on ranking web pages in search engine results. AEO focuses on making your brand visible inside AI-generated answers across platforms like ChatGPT, Perplexity, and Google AI Overviews. While search optimisation targets keywords and backlinks, AEO targets content answerability, entity signals, and citation authority. The two disciplines complement each other — strong search fundamentals improve AEO outcomes.
Initial improvements in AI citation visibility typically appear within 60–90 days of implementing technical and content changes. However, building sustained citation authority is an ongoing process. AI platforms continuously re-index and re-evaluate content, so maintaining visibility requires regular content updates, fresh statistics, and ongoing entity building.
AEO covers all major AI answer platforms: ChatGPT (which commands 60.7% market share among AI chatbots), Google AI Overviews (reaching 2 billion users), Perplexity (the fastest-growing AI search platform), Claude, Gemini, and Microsoft Copilot. Each platform uses different retrieval and ranking mechanisms, so a comprehensive AEO strategy optimises for all of them.
Yes — arguably more so than for B2C. B2B buyers increasingly use AI assistants to research vendors, compare solutions, and shortlist providers before ever speaking to a sales team. If your brand isn't cited when a decision-maker asks ChatGPT “What are the best [your category] providers?”, you've lost the opportunity before it began. AI traffic also converts at significantly higher rates for B2B sign-ups and subscriptions (Microsoft Clarity, 2025).
The primary metric is citation rate — the percentage of relevant AI queries where your brand is mentioned, cited, or recommended. This is measured by querying AI platforms with your target buyer questions and tracking brand mentions over time. Secondary metrics include AI referral traffic (trackable in GA4), AI-referred conversion rates, and share of voice relative to competitors across AI platforms.
Basic AEO improvements — adding structured data, updating content freshness signals, creating FAQ sections — can be implemented by any competent marketing team. However, sustained citation authority requires specialist knowledge of how large language models retrieve, rank, and cite content, plus ongoing monitoring across multiple AI platforms. Most businesses benefit from specialist guidance, particularly in the strategy and measurement phases.
Have questions about Answer Engine Optimisation? Get in touch.