As generative AI reshapes digital discovery in 2026, the search landscape has fractured into two distinct disciplines. Traditional SEO focuses on securing rankings and clicks via backlinks and relevance, while Generative Engine Optimization (GEO) builds LLM citation authority to ensure brands are selected, mentioned, and linked in AI-generated answers. Navigating this zero-click economy requires a fundamental shift from page-level keyword strategies to passage-level extractability, intense factual density, and semantic entity consistency.