Overview#G-Suite Domain represents a virtual group of all the members in an Organizational Entity within G-Suite.
G-Suite Domain is part of Google Cloud Platform with some legacy baggage. (2017-08-12)
G-Suite Domain customers can associate their email accounts with an DNS Domain name. When you do this, each email account takes the form email@example.com. You can specify an identity by using any DNS Domain name that is associated with a G-Suite Domain account.
The G-Suite Domain "G-Suite Super Admin" are the Google Organization Owners