# Authorization

Authorization determines who can access what in your ThousandEyes environment. You can usa a combination of roles, permissions, and account groups, to define how users interact with tests, data, and configurations across your organization.

## Key Concepts

* [Role-Based Access Control](https://docs.thousandeyes.com/product-documentation/user-management/authorization/rb-access-control)

  Assign roles to users to control their permissions across the platform. See the following articles for more information:

  * [Role-Based Access Control, Explained](https://docs.thousandeyes.com/product-documentation/user-management/authorization/rb-access-control/role-based-access-control-explained)
  * [Built-in Roles and Permissions](https://docs.thousandeyes.com/product-documentation/user-management/authorization/rb-access-control/built-in-roles-and-permissions)
* [Account Groups](https://docs.thousandeyes.com/product-documentation/user-management/authorization/account-groups)

  Account groups organize users and resources by team or purpose, helping maintain clear responsibilities and clean configurations. See the following articles for more information:

  * [What is an Account Group](https://docs.thousandeyes.com/product-documentation/user-management/authorization/account-groups/what-is-an-account-group)
  * [Working with Account Settings](https://docs.thousandeyes.com/product-documentation/user-management/authorization/account-groups/working-with-account-settings)
  * [Users in Multiple Organizations](https://docs.thousandeyes.com/product-documentation/user-management/authorization/account-groups/users-in-multiple-organizations)
  * [Changing Ownership of a Test](https://docs.thousandeyes.com/product-documentation/user-management/authorization/account-groups/changing-ownership-of-a-test)
  * [Working with Time Zone Settings](https://docs.thousandeyes.com/product-documentation/user-management/authorization/account-groups/working-with-time-zone-settings)
* [OAuth 2.0 with ThousandEyes](https://docs.thousandeyes.com/product-documentation/user-management/authorization/oauth-overview)

  Understand OAuth 2.0 in the context of ThousandEyes authorization.
* [Adding a Profile Image with Gravatar](https://docs.thousandeyes.com/product-documentation/user-management/authorization/adding-a-profile-image-with-gravatar)

  Personalize your profile with Gravatar.