The command to create a member account in your organization is extremely simple.
The email address that's used cannot be associated with any other AWS accounts.
The account creation process takes some time, so it is done asynchronously. This means that you won't receive an immediate status for your create-account command. Instead, the command in this recipe will return a request ID.
This ID is then passed to another account to check the status of its creation. When the status is CREATED, you can start using the new account.