> ## Documentation Index
> Fetch the complete documentation index at: https://wiki.platelunchcollective.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Schema.org

> Schema.

*Platform* · *Structured Data*

## Definition

Schema.org is the collaborative vocabulary for structured data markup, maintained by Google, Microsoft, Yahoo, and Yandex. It defines the types, properties, and relationships that can be expressed in structured data markup — from Organization and Person to LocalBusiness, Article, FAQPage, and hundreds of other entity types.

## Why It Matters for AI Search

Schema.org is the shared language that structured data speaks. When a brand implements schema markup, it is declaring its entity type and attributes using schema.org vocabulary — the same vocabulary that AI systems and knowledge graphs use to understand entities. Using schema.org types correctly connects a brand's structured data to the broader semantic web that AI systems draw from.

## Related Terms

<CardGroup cols={2}>
  <Card title="Structured data" href="/ai-search-glossary/structured-data" />

  <Card title="JSON-LD" href="/ai-search-glossary/json-ld" />

  <Card title="Entity schema" href="/ai-search-glossary/entity-schema" />

  <Card title="Schema type" href="/ai-search-glossary/schema-type" />

  <Card title="sameAs array" href="/ai-search-glossary/sameas-array" />
</CardGroup>

## Relevant Plate Lunch Collective Services

[Entity SEO](https://www.platelunchcollective.com/services/entity-seo)  [AI SEO](https://www.platelunchcollective.com/services/ai-seo)