--- title: Users --- ### What are users In **ZITADEL** there are different [users](administrate#Users). Some belong to dedicated [organisations](administrate#Organisations) other belong to the [global organisation](administrate#Global_organisation). Some of them are human [users](administrate#Users) others are machines. Nonetheless we treat them all the same in regard to [roles](administrate#Roles) management and audit trail. #### Human vs. Service Users The major difference between human vs. machine [users](administrate#Users) is the type of credentials that can be used: With machine [users](administrate#Users) there is only a non-interactive logon process possible. As such we utilize “JWT as Authorization Grant”. > TODO Link to “JWT as Authorization Grant” explanation. ### How ZITADEL handles usernames **ZITADEL** is built around the concept of [organisations](administrate#Organisations). Each [organisation](administrate#Organisations) has its own pool of usernames which includes human and service [users](administrate#Users). For example a [user](administrate#Users) with the username `road.runner` can only exist once in the [organisation](administrate#Organisations) `ACME`. **ZITADEL** will automatically generate a "logonname" for each [user](administrate#Users) consisting of `{username}@{domainname}.{zitadeldomain}`. Without [verifying the domain name](administrate#Verify_a_domain_name) this would result in the logonname `road.runner@acme.zitadel.ch`. > If you use a dedicated instance **ZITADEL** replace `zitadel.ch` with your domain name. If someone [verifies a domain name](administrate#Verify_a_domain_name) within the organisation, **ZITADEL** will generate additional logonames for each [user](administrate#Users) with the verified domain. For example if the domain is `acme.ch` the resulting logonname would be `road.runner@acme.ch` in addition to the already generated `road.runner@acme.zitadel.ch`. > Domain verification also removes the logonname from all [users](administrate#Users), who might have used this combination in the [global organisation](administrate#Global_organisation). > Relating to example with `acme.ch` if a user in the [global organisation](administrate#Global_organisation), let's call him `coyote`, used `coyote@acme.ch` this logonname will be replaced with `coyote@randomvalue.tld` > **ZITADEL** notifies the user about this change ### Manage Users #### Search Users Image 1: User List Search #### Create Users #### Set Password > Screenshot here ### Manage Service Users > Screenshot here ### Manage User Authorisations > Screenshot here ### Manage User ZITADEL Roles ### Audit user changes > Screenshot here