Glossary
Structured Data
Machine-readable markup added to web pages to declare what the content means, not just what it says.
Structured data is markup added to web pages using Schema.org vocabulary (typically in JSON-LD format) that tells machines what a page is about in explicit, parseable terms. Instead of inferring that a page is about a product from its words, structured data declares the entity type, name, description, price, and relationships directly. For AI-ready websites, structured data is foundational: it is the layer that enables AI systems, answer engines, and LLMs to extract and cite content with confidence.
Also known as:
schema markup, JSON-LD, Schema.org markup, semantic markup