There are several terms you should be familiar with before using Organization. The terms and their descriptions are as follows.
Classification
Description
Master account
A master account is an account that has administrative privileges for an organization, and the account that created the organization becomes the master account for that organization.
Only the master account can invite other accounts to the organization or manage member accounts for the organization.
A master account exists in the top hierarchy of an organization and cannot be located under an account group or member account.
An organization must have one master account, and a master account cannot create another organization.
The master account does not have access to sub-member accounts.
Unable to log into the portal/console of a member account with the account information of the master account.
Member account
A member account is any account that belongs to an organization, and can only belong to one organization.
The master account can invite an independent account to an organization, and if the independent account accepts the invitation, it will be switched to a member account for that organization.
The master account can be removed from the member organization, which converts the member account to an independent account.
A member account can leave the organization, which converts the member account to an independent account.
Independent accounts
An independent account is an account that does not belong to any organization.
An independent account can create an organization.
If you are an independent account and want to belong to a previously created organization, an invitation from that organization's master account is required.
Account group
A set of member accounts/account groups used to manage the hierarchy of Organization.
You can add another account group or member account under it by creating an account group.
The control policy applied to an account group applies to all member accounts and account groups within that group.
You can create an empty (with no member accounts under it) account group.
Quota Policy
A policy that defines usage limits for services in a Region/zone can be applied to account groups within an Organization.
A Quota Policy linked to an account group is applied to all of its sub-member accounts and account groups.
Master accounts can create a limit policy within the resource usage limits provided by Ncloud and apply it to the account groups within the Organization.