> ## 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.

# Taxonomy

> A taxonomy is a hierarchical classification system for organizing concepts, topics, or entities into categories and subcategories.

*Technical implementation* · *Content Strategy*

## Definition

A taxonomy is a hierarchical classification system for organizing concepts, topics, or entities into categories and subcategories. In content strategy, taxonomy defines how a site's content is grouped, labeled, and interrelated — directly shaping information architecture and internal linking structure.

## Why It Matters for AI Search

A clear content taxonomy enables AI systems to understand the topical hierarchy of a site's content — which topics are primary, which are subtopics, and how they relate. Brands building topical authority in a domain benefit from an explicit taxonomy: each tier of the hierarchy becomes a tier of content depth, from broad overview pages down to specific detail entries. A well-designed taxonomy also guides URL structure and internal linking in ways that make topical relationships explicit to AI crawlers.

## Related Terms

<CardGroup cols={2}>
  <Card title="Information architecture" href="/ai-search-glossary/information-architecture" />

  <Card title="Topic cluster" href="/ai-search-glossary/topic-cluster" />

  <Card title="Content hub" href="/ai-search-glossary/content-hub" />

  <Card title="Hub and spoke model" href="/ai-search-glossary/hub-and-spoke-model" />

  <Card title="Topical map" href="/ai-search-glossary/topical-map" />
</CardGroup>

## Relevant Plate Lunch Collective Services

[AI SEO](https://www.platelunchcollective.com/services/ai-seo)  [Citation-Ready Content](https://www.platelunchcollective.com/services/citation-ready-content)