The shift
When Google shows an AI Overview, the generated answer sits above the traditional links, and it satisfies many searchers before they ever scroll. Click-through rates for the top organic positions drop sharply when an Overview is present. Ranking first no longer guarantees the visit.
The new unit of visibility
Inside an Overview, visibility belongs to the cited sources, the handful of pages the AI drew from. Being one of them puts your brand inside the answer; being absent makes even a first-place ranking invisible for that query. Citation share is becoming as important as rank.
How to measure the impact
Watch for the signature pattern in your Performance page: impressions holding steady while clicks decline. That usually means Overviews are absorbing clicks on queries you still rank for. Then check the Observatory: if you are not being cited on those queries, that is the gap to close.
Why it matters
A falling CTR with stable rank is not an SEO failure, it is a GEO gap. The fix is citation-oriented content work, not more keywords.
How to respond
Identify your highest-value queries where an Overview appears, analyze the relevant pages, and prioritize the citation-factor recommendations: quotable statements, structured data, and factual precision. The goal shifts from winning the click to being in the answer, and capturing the clicks that remain.