Connect your domain to Microsoft 365 for business
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Once you’ve set up Microsoft 365 and moved your email data from Google Workspace, you can connect your domain to Microsoft 365.
First you will need to delete existing DNS records from Google, and then we can add new DNS records from Microsoft 365.
Sign into your Google Workspace admin console at admin.google.com.
Select Domains, Manage domains, View details, Manage domain, then DNS in the left nav.
Scroll down to Synthetic records, open Google Workspace, select Delete, then Delete again.
Scroll down to Custom resource records and delete any existing DNS records that appear, including any you may have created previously for Microsoft 365.
Go to the Microsoft 365 admin center.
In the left nav, choose, Show all > Settings > Domains.
Then choose your default domain.
Select Continue setup, then, to connect your domain, choose Continue.
Scroll down to view the DNS records that need to be copied to Google.
Open MX Records, and under Points to address or value, copy the record.
Return to Google, and in the Custom resource records section, open the record type dropdown and select MX.
In the Data field, paste the record you copied.
Then select Add.
Repeat the process for CNAME and TXT records and add the values in the Google DNS management page.
Return to the Microsoft 365 admin center and select Continue.
Your domain setup is complete.