The domain is created by a user and shared with other team members. You can, for example, have a domain created for your company or maybe just for a project depending on your organization. Users can then be added to the account, and the maximum user count depends on the subscription plan.
Users can have the following roles on a domain:
Administrators: They can manage users and services, subscribe to services, change the subscription plan, change other users' permissions, and configure the domain to allow new users or to revoke them. There's no need to be a single administrator as there is no such notion as an owner of the domain.
Users: They can access services but cannot change subscriptions or manage other users.
On RUN@cloud, all users can access applications and databases on the domain. Both users and administrators can create new RUN resources, application containers, or databases.