AEO (Answer Engine Optimization) and GEO (Generative Engine Optimization) describe the same discipline. Both refer to optimizing brands and sites for visibility inside AI-generated answers. AEO emphasizes the citation-extraction aspect of how answer engines surface sources. GEO emphasizes the generative aspect of how models produce their own original text from training and retrieval data. Practitioners use the two terms interchangeably.
Different practitioners coined different acronyms around the same time. AEO emphasizes the engine returning an answer. GEO emphasizes the engine generating original text. The underlying work to win citations is identical.
Schema markup, llms.txt files, AI Instructions pages, entity strengthening, citation harvesting, answer-pattern content. The discipline is one. The acronym is just preference.
AEO is more widely used in 2026. GEO is more common in academic and Microsoft-influenced contexts. Use whichever your audience prefers. Spacemen Digital and its GEO service page cover the same work.
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