Technical explanation
Valid markup helps engines resolve entities and extract facts, but it is an aid to understanding rather than a ranking lever. Invalid or contradictory markup does more harm than none at all.
Example
An Organization block with a consistent @id, plus BreadcrumbList on deep pages, is usually enough for a service business.
How it differs
Schema does not guarantee a citation; it only removes ambiguity.
Related terms
Where Varazm measures this:
Site-wide AEO AuditMethodology