Add your Google Workspace domain to Microsoft 365
Add your Google Workspace domain to Microsoft 365 for business so you can keep using your business email address.
Go to the Microsoft 365 admin center.
In the Microsoft 365 admin center, in the left nav, select Show all > Settings > Domains.
Choose Add domain, enter your domain name then select Use this domain.
Choose, Add a TXT record to the domains DNS records, select Continue, and copy the TXT value.
Go back to the Google Admin Console, choose Domains, Manage domains, View Details, Manage domain, DNS, and then scroll down to Custom resource records.
Open the record type drop-down, choose TXT, paste the TXT value you copied then select Add.
The update usually takes a fact within a few minutes but may take up to 48 hours.
Return to the admin center, select Verify,and then Close.
To set your domain as the primary email for your users, in the left nav, select Users > Active users.
Choose a user, select Manage username and email, Edit, select your domain from the dropdown, then select Done and Save changes.
Repeat this process for each user.
When you're finished, you'll be ready to install Office apps and migrate your email and calendar items to Microsoft 365.