AEO (Answer Engine Optimization) is a digital marketing discipline that aims to optimize content so it gets selected as a direct answer by AI-powered search engines: Google AI Overviews, ChatGPT Search, Perplexity. It also targets classic "zero-click" formats: featured snippets, People Also Ask, knowledge panels.

In 2025, more than 57% of Google searches end without the user clicking on any result, because the answer is displayed directly in the SERP. For lawyers, this means content must be structured to answer the question immediately before expanding on the topic. The "answer-first" architecture consists of placing a concise definition at the top of the article, followed by the detailed discussion.

The technical levers of AEO include structured data (Schema.org markup such as FAQPage, HowTo, Article), conversational language (phrasing headings as questions), and clear semantic hierarchy (H1, H2, H3). For law firms, AEO complements traditional legal SEO and GEO: together, these three disciplines cover the full range of discovery channels, from traditional Google results to AI-generated answers.