AEO glossary
Passage ranking
Passage ranking is Google's AI system for judging individual sections, or passages, of a web page to understand how relevant the page is to a search.
In October 2020, Google announced a ranking change for passages. Its point was that the one sentence that answers a specific question may be buried deep in a long page, so Google's systems began judging the relevance of individual passages, not only whole pages. Google said at the time: "This technology will improve 7 percent of search queries across all languages as we roll it out globally." It still lists a passage ranking system in its guide to ranking systems.
Note the wording in Google's current guide: passages are used to understand how relevant a page is to a search. The page is still what appears in classic results; the passage helps decide where.
The same passage-level view runs through AI search. Claude's web search citations, for example, carry up to 150 characters of the cited text: a sentence or two, not a page. For you, that means one clear, self-contained paragraph on a long page can do real work. Put the answer to each likely question in its own passage, naming the subject and giving the figure in the same sentence.
Learn it properly
The course covers this in Writing citable content. Lesson 1 is free.
Related terms
Sources
- A guide to Google Search ranking systems (opens in a new tab) · Google Search Central · Updated 10 Dec 2025
- How AI is powering a more helpful Google (opens in a new tab) · Google · Published 15 Oct 2020
- Web search tool (opens in a new tab) · Anthropic · Checked 28 Oct 2026