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---
comments: false
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type: index
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stage: Manage
group: Access
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info: To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments
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---
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# GitLab authentication and authorization
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GitLab integrates with the following external authentication and authorization
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providers:
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- [Atlassian ](atlassian.md )
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- [Auth0 ](../../integration/auth0.md )
- [Authentiq ](authentiq.md )
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- [AWS Cognito ](cognito.md )
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- [Azure ](../../integration/azure.md )
- [Bitbucket Cloud ](../../integration/bitbucket.md )
- [CAS ](../../integration/cas.md )
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- [Crowd ](crowd.md )
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- [Facebook ](../../integration/facebook.md )
- [GitHub ](../../integration/github.md )
- [GitLab.com ](../../integration/gitlab.md )
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- [Google OAuth ](../../integration/google.md )
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- [JWT ](jwt.md )
- [Kerberos ](../../integration/kerberos.md )
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- [LDAP ](ldap/index.md ): Includes Active Directory, Apple Open Directory, Open LDAP,
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and 389 Server.
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- [Google Secure LDAP ](ldap/google_secure_ldap.md )
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- [Salesforce ](../../integration/salesforce.md )
- [SAML ](../../integration/saml.md )
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- [SAML for GitLab.com groups ](../../user/group/saml_sso/index.md ) ** (PREMIUM SAAS)**
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- [Shibboleth ](../../integration/shibboleth.md )
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- [Smartcard ](smartcard.md ) ** (PREMIUM SELF)**
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- [Twitter ](../../integration/twitter.md )
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NOTE:
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UltraAuth has removed their software which supports OmniAuth integration. We have therefore removed all references to UltraAuth integration.
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## SaaS vs Self-Managed Comparison
The external authentication and authorization providers may support the following capabilities.
For more information, see the links shown on this page for each external provider.
| Capability | SaaS | Self-Managed |
|-------------------------------------------------|-----------------------------------------|------------------------------------|
| **User Provisioning** | SCIM< br > JIT Provisioning | LDAP Sync |
| **User Detail Updating** (not group management) | Not Available | LDAP Sync |
| **Authentication** | SAML at top-level group (1 provider) | LDAP (multiple providers)< br > Generic OAuth2< br > SAML (only 1 permitted per unique provider)< br > Kerberos< br > JWT< br > Smartcard< br > OmniAuth Providers (only 1 permitted per unique provider) |
| **Provider-to-GitLab Role Sync** | SAML Group Sync | LDAP Group Sync |
| **User Removal** | SCIM (remove user from top-level group) | LDAP (Blocking User from Instance) |
