az cloud --help Manage registered Azure clouds.

[addaxnasom]

Group
    az cloud : Manage registered Azure clouds.

Commands:
    list          : List registered clouds.
    list-profiles : List the supported profiles for a cloud.
    register      : Register a cloud.
    set           : Set the active cloud.
    show          : Get the details of a registered cloud.
    unregister    : Unregister a cloud.
    update        : Update the configuration of a cloud.