# Manage Data Metadata

This section includes guidance for connecting and managing data metadata, which is used by Immuta to identify data targeted by policies or to generate Immuta reports.

<figure><picture><source srcset="https://1751699907-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlWBda5Pt4s8apEhzXGl7%2Fuploads%2Fgit-blob-0964e77cdfc16c0e9246902ae48f1187bb19347b%2Fcatalog_tags_dark.png?alt=media" media="(prefers-color-scheme: dark)"><img src="https://1751699907-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlWBda5Pt4s8apEhzXGl7%2Fuploads%2Fgit-blob-092c2983eba300a68f702ea1ff44608383484ad5%2Fcatalog_tags.png?alt=media" alt="Once your external data catalog tags, identification tags, and classification tags are applied to your data sources, you can use those tags to author policies to protect your data."></picture><figcaption></figcaption></figure>

## [Connect external catalogs](https://documentation.immuta.com/saas/configuration/tags/catalogs)

Integrate your existing data catalog with Immuta.

## [Data identification](https://documentation.immuta.com/saas/configuration/tags/data-discovery)

Automatically identify and tag data based on its content or column names.

## [Data classification](https://documentation.immuta.com/saas/configuration/tags/data-classification)

Automatically tag data based on its sensitivity and the associated risk level.

## [Manage tags](https://documentation.immuta.com/saas/configuration/tags/manage-tags)

Create and manage tags in Immuta.