Schema completeness directly affects citation outcomes because AI extractors prefer pre-declared structured data over inferred information. A page with comprehensive schema is treated as a higher-confidence citation source than a page with the same prose content but no schema markup.
The IEO Engine architecture mandates schema completeness across all content types. Article schema for content pages, DefinedTerm schema for glossary entries, LocalBusiness schema for vertical deployment pages where applicable, BreadcrumbList schema for navigation hierarchy. Schema completeness is a foundational architectural requirement, not an optional enhancement.