> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Configuring an OAuth 2.0 External Identity Provider

> Set up AD FS or Azure Active Directory (Azure AD) as an OAuth 2.0 External Identity Provider for your ABBYY Vantage tenant.

Set up AD FS or Azure AD as an OAuth 2.0 External Identity Provider for your Vantage tenant. Each guide below walks through the provider-side configuration; once that's complete, [connect the provider to your Vantage tenant](/vantage/documentation/tenant-admin/tenant-management/configuring-tenant).

<Note>
  This setup requires the **Tenant Administrator** role.
</Note>

<CardGroup cols={2}>
  <Card title="Active Directory Federation Services (AD FS)" icon="shield-halved" href="/vantage/documentation/tenant-admin/tenant-management/oauth-2-0-active-directory">
    Configure on-premises AD FS as an OAuth 2.0 External Identity Provider.
  </Card>

  <Card title="Azure Active Directory (Azure AD)" icon="cloud" href="/vantage/documentation/tenant-admin/tenant-management/oauth-2-0-azure-active-directory">
    Configure Azure AD as an OAuth 2.0 External Identity Provider.
  </Card>
</CardGroup>

## Related topics

<CardGroup cols={2}>
  <Card title="Setting up an External Identity Provider" icon="shield-halved" href="/vantage/documentation/tenant-admin/tenant-management/external-identity-provider">
    Overview of OAuth 2.0 and SAML 2.0 provider setup
  </Card>

  <Card title="Configuring a SAML 2.0 External Identity Provider" icon="shield-halved" href="/vantage/documentation/tenant-admin/tenant-management/saml-2-0">
    SAML 2.0 alternative to OAuth 2.0
  </Card>

  <Card title="Setting up an External Identity Provider for a tenant" icon="sliders" href="/vantage/documentation/tenant-admin/tenant-management/configuring-tenant">
    Apply the External Identity Provider to your tenant
  </Card>

  <Card title="Testing external authentication" icon="vial" href="/vantage/documentation/tenant-admin/tenant-management/testing-external-auth">
    Verify the External Identity Provider before users sign in
  </Card>
</CardGroup>