The universally adopted structured data vocabulary that enables machine-readable entity representation on the web. Schema.org markup transforms human-readable content into AI-parseable assertions about who you are, what you do, and how you relate to other entities. Structured data is the prerequisite for entity disambiguation: without it, AI systems cannot reliably distinguish you from similarly-named entities. Schema.org implementation is the foundational layer of identity sovereignty and the technical enabler of KGMID assignment. Incomplete or inconsistent schema is mechanically equivalent to entity ambiguity.