SEO (Search Engine Optimization) is ranking in traditional results. AEO (Answer Engine Optimization) is getting pulled into featured snippets like Google’s People Also Ask. GEO (Generative Engine Optimization) is getting cited by AI tools like ChatGPT, Claude, Perplexity, and Gemini when someone asks a question. All three reward the same core things: useful, trustworthy, well-structured content from credible sources.