AEO vs LLMO Differences — The 70% Overlap, the 30% Unique, and Where GEO Sits
In 2026 the SEO industry has three new terms trending at once — AEO, LLMO, GEO — and even Neil Patel, Profound, and emarketer disagree on the definitions. This article proposes the most pragmatic May 2026 ordering: AEO ⊂ GEO ⊃ LLMO. We compare AEO (Google AI Overview/Featured Snippet/Perplexity/ChatGPT Search) vs LLMO (plain chat use of ChatGPT/Claude/Gemini) across eight axes: target platform, main scenario, goal, relationship to SEO, unique techniques, primary metric, time to effect, and industries that benefit. Then we cover the seven shared techniques (E-E-A-T / structured data / first-party data / inverted pyramid / AI-bot allow / Q&A format / llms.txt), the four AEO-only techniques (SERP rich results / Featured Snippet sniping / PAA capture / search-intent matching), the four LLMO-only techniques (training corpus exposure / brand consistency / third-party mentions / prompt recall testing), an industry priority matrix, and three pitfalls (terminology debates / downplaying SEO / vague measurement).