Passage Ranking.

Passage ranking (officially 'passage indexing' in Google's terminology) is a capability launched in 2021 that allows Google to surface and rank individual passages within a long-form page for highly specific queries — even when the overall page topic is broader. Google evaluates not just whether a page broadly matches a query but whether a specific section of the page answers it precisely.

Practical Impact on SEO

Passage ranking improves the ability of comprehensive, long-form pages to rank for specific long-tail sub-questions addressed in the body content. A definitive guide to email marketing might surface its passage about A/B testing subject lines for the specific query 'how to A/B test email subject lines' — a query the whole page doesn't target.

Writing for Passage Ranking

Content optimised for passage ranking uses clear section headers (H2, H3), concise topic-focused paragraphs that answer one question completely, and avoids burying key answers in preamble. Each section should be able to stand alone as an answer to its implicit question. This structure also benefits featured snippet eligibility.

Passage Ranking vs. Featured Snippets

Both passage ranking and featured snippets surface specific text from a page for specific queries. The key difference: featured snippets appear at the top of the SERP in a boxed format (position zero). Passage ranking determines which URL ranks in organic positions — it is an indexing and ranking mechanism, not a display format.