AI Overviews put a generated answer between the searcher and the classic results. When one appears, many users get what they need without scrolling to the blue links, which reduces clicks to pages that are not cited in the overview.
To be included, the same fundamentals apply: answer the question clearly and early, earn topical authority, and use structured data. Being one of the handful of cited sources in an AI Overview is now a distinct visibility goal, separate from ranking first in the organic list below it.