Google’s Official Guide to AI Search Optimization: What Healthcare Brands Must Do Now

Google’s official guide to generative AI search optimization confirms that foundational SEO remains the right strategy for AI Overviews and AI Mode — no special “AEO” or “GEO” hacks required. The guide explains that Google’s AI features use retrieval-augmented generation (RAG) to surface content from the standard search index, meaning existing indexing, crawlability, and content quality signals are the same factors that determine AI citation eligibility. Google explicitly dismisses tactics like llms.txt files, content “chunking,” and inauthentic mention-building as ineffective. For healthcare brands, the primary levers are non-commodity expert-driven content, clear technical structure, and Google Business Profile optimization. The guide also introduces emerging agentic experiences — autonomous AI agents that can browse and interact with websites — as a developing channel worth monitoring. Updated May 2026.