Passage Indexing.

Passage indexing (more accurately called passage ranking) is Google's capability to identify and rank specific passages within a longer page for queries that match the passage's content—even when the overall page is about a broader topic. A long guide about 'content marketing' might rank for a specific question about 'how to repurpose blog content for social media' if that question is thoroughly answered in one passage of the guide.

Implications for Content Strategy

Passage indexing reduces the necessity of creating separate short articles for every specific question. A comprehensive pillar page that addresses many related subtopics can rank for those subtopic queries through passage indexing—making long-form, multi-dimensional content more valuable than before. Clear section structure (H2s, H3s, short focused paragraphs) helps Google identify and extract relevant passages.

Passage Indexing and Featured Snippets

Passage indexing is closely related to Featured Snippets—both involve Google surfacing specific portions of pages. The difference is that passage indexing can cause a specific passage to rank in organic results even without earning the Featured Snippet box. Writing content with clear, self-contained sections that directly answer specific questions maximises both passage indexing and Featured Snippet eligibility.