SEO: optimize for Google/Bing rankings. Success metric: keyword rankings and organic traffic. AEO (Answer Engine Optimization): structure content to be cited by AI models. Success metric: citation frequency in AI answers. Optimizes for AI model as the reader, not human. AI Visibility: measurement of current citation state across AI models. The Omni AI Visibility Engine is the measurement tool — it reveals whether SEO and AEO efforts are producing AI citation results. System at omnionlinestrategies.com/ai-discoverability-demo.