apps/docs/content/guides/manage/customize/restrictions.mdx
New self-hosted and ZITADEL Cloud instances are unrestricted by default. Self-hosters can change this default using the DefaultInstance.Restrictions settings section. Users with the role IAM_OWNER can change the restrictions of their instance using the Feature Restrictions Admin API. Currently, the following restrictions are available:
Feature restrictions for an instance are intended to be configured by a user that is managed within that instance. However, if you are self-hosting and need to control your virtual instances usage, read about the APIs for limits and quotas that are intended to be used by system users.