What this means
How systems resolve real-world entities and their relationships.
Historical record
BERT improves Google Search’s language understanding
Semantic clarity and contextual relevance became more important than literal keyword matching alone.
Google launches the Knowledge Graph: “things, not strings”
Modern AI visibility depends heavily on consistent entity identity and relationships across the web.
Schema.org establishes a shared structured-data vocabulary
Structured data became a durable layer for machine understanding and remains relevant to search, product discovery, entities and AI-facing content systems.