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The average zero-click rate for "answer engine optimization" on Google is 78%. Nearly eight in every ten people searching for this exact topic get their answer directly on the results page, without clicking through to any website.

Zero-click searches for news-related queries jumped from 56% to 69% between May 2024 and May 2025. Users clicked on a traditional search result just 8% of the time when an AI summary appeared, compared to 15% when it did not. That's a 47% reduction in click-through rate.

What is AEO? Answer engine optimization is the discipline of making your brand the most reliable, easy-to-quote source for the questions your customers ask across AI-powered systems.

AEO involves three sequential outcomes: 1. Being retrieved when an AI system searches for source material 2. Being trusted enough to be selected as a primary source 3. Being cited with your brand name (and ideally your URL) in the final answer

AEO vs SEO vs GEO: SEO ensures pages are indexed and authoritative. AEO structures them so AI systems extract and attribute them as answers. GEO extends further to maximize share of voice.

Key insight: When AI Overviews appear, organic CTR dropped 61% for brands not cited. For brands that were cited, the same queries drove 35% more organic clicks and 91% more paid clicks.

How RAG-based AI engines select content: Query fan-out process → content ranked at the chunk level → evaluated for relevance, clarity, and trust.

总结： How RAG-based AI engines select content: Query fan-out process → content ranked ...