---
title: Authentication plugins
description: Authentication plugins extend the functionality provided by the built-in authentication realms. 
url: https://www.elastic.co/elastic/docs-builder/docs/3028/reference/elasticsearch/plugins/authentication-plugins
products:
  - Elasticsearch
applies_to:
  - Elastic Stack: Generally available since 9.1
---

# Authentication plugins
Authentication plugins extend the functionality provided by the built-in [authentication realms](https://docs-v3-preview.elastic.dev/elastic/docs-builder/docs/3028/deploy-manage/users-roles/cluster-or-deployment-auth/authentication-realms).

## Core authentication plugins

<definitions>
  <definition term="Microsoft Graph Authz">
    The Microsoft Graph Authz plugin uses [Microsoft Graph](https://learn.microsoft.com/en-us/graph/api/user-list-memberof) to look up group membership information from Microsoft Entra ID
  </definition>
</definitions>