> ## 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.

# Semantic Web

> The semantic web is the vision and standards for publishing data so machines can read the meaning of information and the relationships between things.

*Core concept* · *Entity & Knowledge Graph*

## Definition

The semantic web is the vision and set of standards for publishing data so that machines can read the meaning of information and the relationships between things, rather than only the text. Its building blocks are shared vocabularies, linked identifiers, and structured formats that let one source's data connect to another's. Knowledge graphs and structured data are the semantic web's ideas put to work.

## Why It Matters for AI Search

AI search runs on the machinery the semantic web imagined. Structured data, linked identifiers, and knowledge graphs are how a model turns a page into facts it can reason over and connect to other things it knows. A business that publishes structured, linked data is speaking the semantic web's language, which is what lets a model place it precisely instead of inferring it from prose. The gap between a page a person can read and data a machine can resolve is the gap this standard was built to close.

## Related Terms

<CardGroup cols={2}>
  <Card title="Knowledge graph" href="/ai-search-glossary/knowledge-graph">Narrower term</Card>
  <Card title="Structured data" href="/ai-search-glossary/structured-data">See also</Card>
  <Card title="Schema markup" href="/ai-search-glossary/schema-markup">See also</Card>
  <Card title="Entity recognition" href="/ai-search-glossary/entity-recognition">See also</Card>
  <Card title="Entity confidence" href="/ai-search-glossary/entity-confidence">See also</Card>
</CardGroup>

## Relevant Plate Lunch Collective Services

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