# Introduction

With the GitLab authentication and provisioning, two provisioning modes are available:

* Just-in-Time (JIT) provisioning\
  With this mode, user accounts are created in SonarQube when GitLab users log in for the first time. You can use group synchronization and user access restriction features.
* Automatic provisioning\
  With this mode, you benefit from:
  * Automatic user and group provisioning and de-provisioning (based on a list of allowed GitLab groups).
  * Automatic synchronization of users’ group memberships.
  * Automatic synchronization of user permissions on projects.
  * Automatic project visibility synchronization.

{% hint style="info" %}
When authentication is delegated to GitLab in SonarQube, the user’s email address is synchronized with GitLab at each login to SonarQube.
{% endhint %}

## Related pages <a href="#related-pages" id="related-pages"></a>

* Feature description:
  * [just-in-time](https://docs.sonarsource.com/sonarqube-server/10.7/instance-administration/authentication/gitlab/provisioning-modes/just-in-time "mention")
  * [automatic](https://docs.sonarsource.com/sonarqube-server/10.7/instance-administration/authentication/gitlab/provisioning-modes/automatic "mention")
* [setting-up](https://docs.sonarsource.com/sonarqube-server/10.7/instance-administration/authentication/gitlab/setting-up "mention")
* [managing-jit-mode](https://docs.sonarsource.com/sonarqube-server/10.7/instance-administration/authentication/gitlab/managing-jit-mode "mention")
* [managing-automatic-provisioning](https://docs.sonarsource.com/sonarqube-server/10.7/instance-administration/authentication/gitlab/managing-automatic-provisioning "mention")
* [disabling](https://docs.sonarsource.com/sonarqube-server/10.7/instance-administration/authentication/gitlab/disabling "mention")


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