
# Classification

**Classification** is a controlled vocabulary and can be used for labeling data. A controlled vocabulary is an organized arrangement of words and phrases to define terminology to organize and retrieve information. Classification helps in defining the type of data.

Watch the [Webinar on Glossaries and Classifications in OpenMetadata](https://www.youtube.com/watch?v=LII_5CDo_0s)

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 {%inlineCallout
  color="violet-70"
  bold="Overview of Classification"
  icon="MdDiscount"
  href="/how-to-guides/data-governance/classification/overview"%}
  Learn about the classification tags, system tags, and mutually exclusive tags.
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 {%inlineCallout
  color="violet-70"
  bold="Classify Data Assets"
  icon="MdDiscount"
  href="/how-to-guides/data-governance/classification/assets"%}
  Add tags to data assets, or request them and discuss about the same, all within OpenMetadata.
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 {%inlineCallout
  color="violet-70"
  bold="Request for Tags"
  icon="MdDiscount"
  href="/how-to-guides/data-governance/classification/request-tags"%}
  Users can request to update tags and discuss about these tags within OpenMetadata.
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 {%inlineCallout
  color="violet-70"
  bold="Auto-Classification"
  icon="MdDiscount"
  href="/how-to-guides/data-governance/classification/auto"%}
  Learn how OpenMetadata identifies PII data and auto tags or suggests the tags.
 {%/inlineCallout%}
 {%inlineCallout
  color="violet-70"
  bold="What are Tiers"
  icon="MdDiscount"
  href="/how-to-guides/data-governance/classification/tiers"%}
  Tiers helps to define the importance of data to an organization.
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 {%inlineCallout
  color="violet-70"
  bold="Best Practices for Classification"
  icon="MdThumbUp"
  href="/how-to-guides/data-governance/classification/best-practices"%}
  Here are the Best Practices around Classification.
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