# User Management
To manage permissions in Teamscale, you can use your existing authentication infrastructure or use Teamscale's built-in user management.
As of this writing, Teamscale supports the following user-management solutions:
- LDAP (see our How-To)
- Active Directory (see our How-To)
- Azure DevOps Authorization Server (TFS) (see our How-To)
- Single Sign On (SSO) using SAML 2.0 (see our How-To)
- Built-in User Management
Additional User-Management Solution
If your user-management solution isn't supported yet, don't hesitate to contact us; we continuously add support for new solutions.