Google to M365 Migration

Introduction

A Google Workspace to Microsoft 365 migration is one of the most common platform transitions small and mid-sized businesses undertake as they scale their operations and align with enterprise-grade tooling. Whether your team has outgrown Google's collaboration suite or your clients and partners are deeply embedded in the Microsoft ecosystem, moving to M365 opens up a broader set of productivity, security, and compliance capabilities. The process involves more than just copying files — it requires careful planning around email, calendars, contacts, shared drives, and user accounts. Done right, the transition can be smooth and nearly invisible to end users; done poorly, it can cause days of downtime and data loss.

Understanding the Two Platforms Before You Switch

Google Workspace and Microsoft 365 are both cloud-based productivity suites, but they were built on fundamentally different philosophies. Google Workspace was designed with browser-first collaboration in mind — everything lives in the cloud, edits happen in real time, and the interface is intentionally minimal. Gmail, Google Drive, Google Docs, Sheets, Slides, and Meet all work together seamlessly within Chrome or any modern browser, and the administrative console is relatively straightforward for smaller IT teams. For many startups and lean organizations, this simplicity is exactly what makes Google Workspace attractive in the early stages of growth.

Microsoft 365, on the other hand, is built around a richer desktop application experience combined with cloud infrastructure. Outlook, Word, Excel, PowerPoint, Teams, SharePoint, and OneDrive are deeply integrated with Windows environments and Active Directory, making M365 the dominant choice for organizations that rely on Windows devices, need granular compliance controls, or operate in industries with strict regulatory requirements. Microsoft's security stack — including Defender, Intune, Azure Active Directory, and Purview — gives IT administrators far more control over device management, data governance, and threat response than what Google Workspace offers at comparable price points. Understanding these differences is the foundation of planning a successful migration.

How the Migration Process Actually Works

At a high level, a Google Workspace to Microsoft 365 migration involves four major workstreams: provisioning your M365 tenant, migrating email and calendar data, migrating files and shared drives, and reconfiguring DNS and authentication. Most organizations use Microsoft's native migration tools — such as the Exchange Admin Center's migration wizard — or third-party platforms like BitTitan MigrationWiz, Cloudiway, or SkyKick to handle the heavy lifting of data transfer. These tools connect to both platforms via API, authenticate with admin credentials on each side, and then systematically copy mailboxes, calendar events, contacts, and files over a migration window that can range from a few hours to several days depending on data volume.

One of the most important concepts to understand is the difference between a cutover migration and a staged migration. A cutover migration moves all users at once — typically over a weekend — and is best suited for organizations with fewer than 150 users and relatively clean data. A staged migration moves users in batches over days or weeks, allowing IT teams to test the process with a pilot group before rolling out to the full organization. During the migration window, some organizations run both platforms in parallel, which requires careful DNS configuration to ensure email is routed correctly and no messages are lost. Regardless of the approach, thorough pre-migration auditing of your Google environment — identifying inactive accounts, orphaned files, and oversized mailboxes — will save significant time and reduce the risk of errors.

Step-by-Step Guide

1. Audit Your Google Workspace Environment: Before touching anything in Microsoft 365, export a full inventory of all user accounts, shared drives, mailbox sizes, calendar resources, and third-party app integrations connected to your Google tenant. This audit helps you identify inactive accounts to decommission, large mailboxes that may need archiving, and any apps that will need to be reconfigured or replaced after the migration.
2. Set Up and Configure Your Microsoft 365 Tenant: Create your M365 tenant, add and verify your domain, and set up your initial admin accounts before migrating any data. Configure your security defaults, enable Multi-Factor Authentication for all users, and review your licensing assignments to ensure every user has the appropriate M365 plan for their role and needs.
3. Provision User Accounts in Microsoft 365: Create all user accounts in M365 — either manually, via CSV bulk import, or by syncing with Azure Active Directory — and assign licenses before the migration begins. It is critical that usernames and email addresses in M365 match the corresponding addresses in Google Workspace so that migration tools can correctly map source and destination mailboxes.
4. Migrate Email, Calendars, and Contacts: Use a migration tool such as the Exchange Admin Center migration wizard, BitTitan MigrationWiz, or Cloudiway to connect your Google Workspace tenant and begin transferring mailbox data to Exchange Online. Run an initial full migration pass followed by one or two delta sync passes close to your cutover date to capture any new messages received during the migration window.
5. Migrate Files from Google Drive to OneDrive and SharePoint: Use Microsoft's SharePoint Migration Tool or a third-party solution to transfer personal Google Drive files to OneDrive and shared Team Drives to SharePoint document libraries. Pay close attention to folder structures, permission mappings, and file format conversions — Google Docs, Sheets, and Slides will be converted to their Office equivalents during the transfer.
6. Update DNS Records and Complete the Cutover: On your scheduled cutover date, update your domain's MX records to point to Microsoft 365 and remove any Google-specific DNS entries such as SPF and DKIM records, replacing them with the M365 equivalents. Allow up to 48 hours for DNS propagation, though most providers update within a few hours, and monitor mail flow closely during this window to catch any routing issues early.
7. Train Users and Decommission Google Workspace: Provide end users with orientation resources — quick reference guides, short video walkthroughs, or live training sessions — covering Outlook, Teams, OneDrive, and any other M365 apps they will use daily. Once you have confirmed that all data has migrated successfully, mail flow is stable, and users are operational in M365, cancel your Google Workspace subscription and revoke admin access to the old tenant.

Comparing Migration Tool Options for SMBs

Best Practices

• Run a Pilot Migration First: Always migrate a small group of technical users — ideally 5 to 10 people — before rolling out to the entire organization so you can identify and resolve issues without impacting everyone.
• Communicate the Timeline to All Staff: Send clear, jargon-free communications to employees at least two weeks before the cutover date so they know what to expect and can prepare their own files and workflows.
• Back Up Google Workspace Data Independently: Use a dedicated backup tool such as Spanning or Backupify to create a full snapshot of all Google data before starting the migration, giving you a recovery point if anything goes wrong.
• Preserve Permissions During File Migration: Verify that your migration tool maps Google Drive sharing permissions to the correct OneDrive and SharePoint permission levels so users do not lose access to shared files after the transition.
• Test Mail Flow Before and After Cutover: Send test emails from external addresses to your M365 mailboxes immediately after updating DNS records to confirm that inbound and outbound mail is routing correctly through Exchange Online.

Frequently Asked Questions

How Long Does a Typical Migration Take for a Small Business?

For a small business with 25 to 50 users and a moderate amount of data, a Google Workspace to Microsoft 365 migration typically takes between one and three weeks from initial planning to final cutover. The actual data transfer can often be completed over a single weekend, but the surrounding work — auditing accounts, provisioning M365, training users, and updating DNS — adds time to the overall project. Organizations with large shared drives, complex permission structures, or heavily used Google Sites may take longer. Working with an experienced managed IT services provider can compress the timeline significantly by eliminating trial-and-error troubleshooting.

Will Employees Lose Access to Their Files During the Migration?

With proper planning, employees should experience little to no disruption to file access during the migration. Most migration tools perform a delta sync in the final hours before cutover, meaning files are already in OneDrive or SharePoint before users are switched over to M365. It is a good practice to notify employees not to create new files in Google Drive during the final sync window — typically a two to four hour period — to avoid any last-minute conflicts. Any files created in Google Workspace after the final sync can be manually moved to OneDrive as a cleanup step.

What Happens to Google Docs, Sheets, and Slides After Migration?

During the migration, Google Docs are converted to Microsoft Word (.docx), Google Sheets to Excel (.xlsx), and Google Slides to PowerPoint (.pptx) format automatically by most migration tools. The conversion is generally accurate for standard documents, but complex formatting, embedded charts, or heavily scripted Google Sheets may not convert perfectly and will require manual review. It is worth identifying your most business-critical documents before migration and spot-checking them after conversion to catch any formatting issues early. Users who prefer to continue editing in a browser can still do so through Microsoft 365's web apps, which are available at office.com.

Do You Need to Cancel Google Workspace Immediately After Migrating?

It is generally recommended to keep your Google Workspace subscription active for at least 30 days after the cutover date as a safety net in case any data was missed or a user needs to retrieve something from the old environment. During this overlap period, configure Google Workspace to forward any incoming emails to the corresponding M365 mailboxes so nothing is lost during DNS propagation delays. Once you are confident that all data has been successfully migrated and verified, you can cancel the Google Workspace subscription and export a final backup for your records. Canceling too early is one of the most common and costly mistakes organizations make during this type of migration.

Is Microsoft 365 More Expensive Than Google Workspace?

The cost comparison between Microsoft 365 and Google Workspace depends heavily on which plans you are comparing and what features your organization needs. Google Workspace Business Starter starts at $6 per user per month, while Microsoft 365 Business Basic starts at $6 per user per month as well, making the entry-level pricing nearly identical. However, M365 Business Standard at $12.50 per user per month includes the full desktop Office applications — Word, Excel, PowerPoint, Outlook, and Teams — which Google Workspace does not offer at any tier since Google's productivity apps are browser-based. For organizations that need desktop apps, advanced security features like Microsoft Defender and Intune, or deeper compliance tools, M365 often delivers more value per dollar despite a potentially higher headline price.

If your business is ready to make the move, Always Beyond can manage every phase of your Google Workspace to Microsoft 365 migration — from pre-migration auditing and tenant setup to data transfer, DNS cutover, and end-user training — so your team stays productive throughout the entire process. We work with SMBs across a range of industries to ensure migrations are completed on time, on budget, and without the headaches that come from attempting a complex platform transition without expert guidance. To get started with a free migration assessment, contact Always Beyond today.