What is Schema.org?
TL;DR
Schema.org is a shared vocabulary maintained by Google, Microsoft, Yahoo, and Yandex that defines the types and properties used in structured data markup.
Last updated: 2026-03-09
Definition#
Schema.org is a collaborative project founded by Google, Microsoft (Bing), Yahoo, and Yandex. It defines a shared vocabulary of types and properties that websites use to describe their content in a machine-readable way.
The vocabulary covers hundreds of types: Organization, Person, Product, Article, Event, Recipe, LocalBusiness, and many more. Each type has defined properties. For example, a Product has properties like
name, price, description, brand, and aggregateRating.
When you add structured data to your site using JSON-LD, you use Schema.org types and properties to describe your content. Search engines and AI models recognize this vocabulary and use it to extract accurate information.Why It Matters for AI Readiness#
Schema.org is the universal language that AI models use to understand structured data. Using it correctly means your content is interpretable by every major AI platform and search engine. The AgentReady™ scanner checks your Schema.org implementation as part of the Schema Markup factor.
Related Concepts#
Schema.org provides the vocabulary for Structured Data, which is implemented using JSON-LD. It is evaluated in the Schema Markup factor.
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