Google Workspace to Microsoft 365 Migration: Best Practices for IT Teams
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Written By
Aradhya Jain -
Approved By
Shivam Rathore -
Updated on
July 16th, 2026 - Read Time
7 minutes
User Query: We are a 120-employee company currently running on Google Workspace for email, Drive, and Calendar. Our leadership has decided to move everyone to Microsoft 365 because most of our vendors and clients already use Teams and Outlook. I’m the only IT person handling this, and I’m worried about losing emails, shared Drive files, and calendar events during the switch. What’s the correct order of steps, and is there a way to do this without weeks of downtime?
Introduction: The process of Google Workspace to Microsoft 365 migration is one of the most common IT projects for companies. When they need better integration with Teams, SharePoint, and Windows-based tools. But the process touches mail flow, DNS records, Drive files, calendars, and user accounts at the same time. So a wrong step can mean missing emails or duplicate calendar entries. This guide breaks the migration into clear stages and compares the manual process and the DRS Softech Google Workspace to Office 365 Backup Tool for a hassle-free migration.
Key Architectural Differences For G Suite to M365 Migration
Before running your first migration batch, you must understand how data transforms when moving between these ecosystems:
- Gmail (Inbox, Sent, Labels) -> Exchange Online mailbox.
- Google Contacts -> Exchange Online contacts.
- Calendar -> Outlook Calendar
- Google Drive (My Drive) -> OneDrive for Business
- Shared Drives -> SharePoint document libraries
- Google Groups -> Microsoft 365 Groups / Distribution Lists
- Chat -> Microsoft Teams chat (partial, manual re-creation needed)
- Google Sites -> Not directly supported; content is usually rebuilt in SharePoint
Pre-Migration Checklist For Google Workspace to M365 Migration
- Verify your domain in Microsoft 365 using a TXT record, and keep MX records pointed at Google until the actual cutover day.
- License every user in the Microsoft 365 admin center before migration starts.
- Create mail-enabled user accounts in Exchange Online matching each Gmail address.
- Export a list of Shared Drives and Google Groups so nothing is missed during mapping.
- Set a maintenance window and inform employees at least a week in advance about calendar sync pauses.
- Backup critical data separately; you can occasionally skip a folder, so a manual export as a safety net is worth the extra hour.
1st Method: Native Google Workspace to Microsoft 365 Migration
- Enable IMAP access in Google Admin Console for all users.
- Generate app passwords for accounts with 2-factor authentication turned on.
- In the Exchange Admin Center, go to Migration > Add Migration Batch.
- Choose IMAP Migration and upload a CSV with each user’s Gmail address and app password.
- Map each Gmail account to its Microsoft 365 mailbox and start the batch.
- Once emails sync, switch MX records to Microsoft 365 to make it the live mail server.
Limitations of this method: IMAP migration moves emails only. Contacts, calendars, Drive files, and Google Groups are not included, and large mailboxes can take hours per batch depending on your internet speed.
2nd Method: Google Workspace to Office 365 Migration for Drive
For Google Drive and Shared Drives, Microsoft offers a separate tool inside the admin center:
- Install the Microsoft 365 Migration app from the Google Workspace (Formerly G Suite) Marketplace.
- In the Microsoft 365 admin center, go to Setup > Migration and Imports and start a Google Drive migration project.
- Scan Drive accounts, review the scan report for file-size or permission issues, and add ready accounts to the migration list.
- Then, map source folders to the correct OneDrive or SharePoint destination.
- Run the migration and check the completion report for skipped items.
Limitations: This tool handles files well but does not migrate email, calendar, or contacts. So most teams end up running two or three separate migration processes side by side.
Professional Tool For Google Workspace to Microsoft 365 Migration
To avoid using multiple manual methods, standalone utilities like the DRS Softech G Suite to Office 365 Migration Tool offer an automated, all-in-one alternative. This tool is designed to migrate Gmail, Google Drive, Contacts, Calendars, Google Docs, Google Slides, Google Jamboard, Google Sheets, Google Keep, and Google Forms. Offer several advanced features, including Date Filter, Remove Duplicates, and Preserve Original Folder Hierarchy. Several Saving formats, like move Google Workspace to Gmail and other formats.
Steps for Migrating from Google Workspace to Microsoft 365
- Download the Google Workspace to Microsoft 365 Migration Tool. Choose either Mailbox Migration or Google Drive Migration.
- Mailbox Migration: Log in using OAuth 2.0 (Modern Authentication), IMAP + App Password, or Google Workspace Admin credentials.
- If you choose Modern Authentication, enter your Email Address, Client ID, and Client Secret. If you don’t have a Client ID and Client Secret, click “I don’t have Client ID and Client Secret” to use the DRS OAuth application.
- Select one or more Google Workspace mailboxes that you want to migrate. You can use the Search option to find specific mailboxes quickly. Click Continue.
- Choose the Gmail folders or labels you want to migrate. Optionally, enable Show Count to view the number of emails in each folder. Click Continue.
- Click Save in Email Client and select Microsoft 365 as the destination platform.
- Log in to Microsoft 365 using Single User or Admin User mode (with Client ID and Client Secret). Apply the required migration options and click Start Migration.
Real-Life Scenario: Migrating from Google Workspace to Microsoft 365
A growing company with around 120 employees decided to move from Google Workspace to Microsoft 365 because its teams and clients mainly used Outlook and Microsoft Teams. The IT administrator had to migrate emails, Google Drive files, contacts, and calendars without interrupting daily work. By planning the migration in batches, testing a few accounts first, and using a migration tool, the company completed the switch with minimal downtime and no important data loss.
Conclusion
Google Workspace to Microsoft 365 Migration is a practical choice for organizations that want better integration with Microsoft Teams, Outlook, SharePoint, and other Microsoft services. While manual methods can migrate specific data types, they often require additional effort. A professional migration tool simplifies the entire process by transferring emails, contacts, calendars, and Google Drive data from a single interface while preserving data integrity.
Frequently Asked Questions
Ans. You can migrate manually using Microsoft’s native migration tools for emails and Google Drive, or use a professional migration tool that transfers emails, contacts, calendars, and Drive data in a single process.
Ans. Yes. Google Groups can be migrated or recreated as Microsoft 365 Groups or Distribution Lists, depending on your migration approach and requirements.
Ans. The migration time depends on the number of users, mailbox sizes, internet speed, and the amount of data being transferred. Small organizations may finish within a few hours, while larger migrations can take several days.
Ans. Yes. The migration tool supports OAuth 2.0 (Modern Authentication) for secure access to Google Workspace and Microsoft 365 accounts.
Ans. Yes. You can use the Date Filter feature to migrate only emails or files within a selected date range, which reduces migration time and unnecessary data transfer.
Ans. Yes. The migration process uses secure authentication methods and transfers data over encrypted connections to help protect your information.
Ans. No. The software uses secure authentication protocols and does not permanently store your login credentials.
Ans. Yes. Administrators can migrate hundreds or even thousands of mailboxes using batch migration and admin authentication features.
Ans. Yes. Users can continue receiving emails while the migration is in progress. The final mail flow switches to Microsoft 365 after updating the MX records.
Ans. Yes. If the migration is interrupted due to a network issue or another problem, you can restart or resume the migration without migrating completed items again.
Ans. Yes. The tool includes a duplicate removal feature that helps prevent duplicate emails from being migrated to Microsoft 365.
