You can associate your Advisor account with a Windows Azure Active Directory domain. This enables you to add users from your Active Directory organization directly to your Advisor account without requiring a separate Microsoft account.
To add a Windows Azure Active Directory organization
From the Account page, click Add Organization.
Review the information about organizational accounts, and then click Next.
Enter the identity information for the administrator of your Windows Azure Active Directory domain, and then click Sign in.
Click grant access to enable Advisor to use the identity information in your Active Directory domain.