Invite an existing account to join your AWS organization

Open the Organizations console at https://console.aws.amazon.com/organizations/.
Choose the Accounts tab. The star next to the account name indicates that it is the master account.
Now you can invite other accounts to join as member accounts.
On the Accounts tab, choose Add account and then choose Invite account.
In the Account ID or email box, enter the email address of the owner of the account that you want to invite, similar to the following: member222@example.com.
Type any text that you want into the Notes box. This text is included in the email that is sent to the owner of the account.
Choose Invite. AWS Organizations sends the invitation to the account owner.
For the purposes of this tutorial, you now need to accept your own invitation. Do one of the following to get to the Invitations page in the console:
- Open the email that AWS sent from the master account and choose the link to accept the invitation. When prompted to sign in, do so as an administrator in the invited member account.
- Open the AWS Organizations console (https://console.aws.amazon.com/organizations/) and sign in as an administrator of the member account. Choose Invitations. The number beside the link indicates how many invitations this account has.
On the Invitations page, choose Accept and then choose Confirm.
Sign out of your member account and sign in again as an administrator in your master account.