Beyond SEO: Generative Engine Optimization (GEO). How to Implement `llms.txt` and RAG-Friendly Markup

As AI search tools like ChatGPT and Perplexity replace traditional Google Search for B2B research, businesses face a 'Zero-Click Funnel' where users make decisions without visiting websites. Generative Engine Optimization (GEO) is the practice of structuring web content—using semantic HTML, FAQ schema markup, and RAG-friendly architecture—so that AI engines accurately cite your brand in their generated answers. Unlike traditional SEO focused on keywords and backlinks, GEO prioritizes being chosen as a trustworthy source by LLMs through structured, consensus-driven content.