Google Workspace to Microsoft 365 Migration

The cost of a Google Workspace to Microsoft 365 migration is usually calculated per mailbox (Gmail → Exchange Online) and per user or data volume in Google Drive (My Drive and Shared Drives). Factors such as multiple domains, heavy Shared Drives usage, integrations, and Google Vault retention can increase complexity.

At MSAdvance, we conduct an initial assessment to size users, data, and dependencies, and deliver a clear budget with no surprises. This way, you’ll know upfront how much it will cost to migrate to Microsoft 365.

MSAdvance converts Gmail labels into Outlook folders, migrates mail, calendars and contacts, and validates end-to-end deliverability. We also update DNS (MX, SPF, DKIM, DMARC) and verify free/busy. See Microsoft’s official guide: Migrate Google Workspace mailboxes to Microsoft 365 and Create DNS records for Microsoft 365.

We recommend a Google → Microsoft 365 migration when organizations want to standardize on Outlook, OneDrive, SharePoint, and Teams; improve security and governance; integrate with the broader Microsoft 365 ecosystem (Power Platform, Purview, Defender); or prepare for Microsoft 365 Copilot. It is also common for license consolidation and customer/partner compliance requirements.

If you only need occasional collaboration, alternatives like external sharing and guest access are available without migrating data.

1. Assessment & inventory of users, domains, Gmail, Drive (My Drive & Shared Drives), Calendar, Contacts, Sites, and policies (Vault).
2. Design identities and UPN strategy in Entra ID, temporary coexistence, security, communications, and test plan.
3. Preparation of domains, permissions, and OAuth/Service Accounts; lower TTL in DNS.
4. Pre-stage and delta passes to move data in batches and minimize cutover impact.
5. Cutover after-hours: MX cutover to Exchange Online, Autodiscover, and validation of email and calendars.
6. Post-cutover: reconciliation of counts and permissions, Outlook/OneDrive profile adjustments, documentation, and support.

This approach reduces risks and ensures operations remain stable during the transition.

• My Drive content is migrated to OneDrive and Shared Drives to SharePoint, preserving versions and metadata when possible.
• We review permissions and shared links, re-map owners/members/visitors, and fix conflicting paths or names.
• We provide guidance for re-syncing the OneDrive client if needed.

Our priority is ensuring users maintain access to their critical documents from day one in Microsoft 365.

The migration requires planning for account mapping from Google to Microsoft Entra ID (UPNs, aliases, groups, and roles), reviewing SSO/OAuth, and enabling MFA and Conditional Access in the target tenant. This ensures strong identity security and minimal risk during and after the transition.

Yes. We move Shared Drives → SharePoint and preserve versions, permissions and most metadata; we also repair links where possible and align owners/members/visitors with Microsoft 365 Groups. Reference: Migrate Google shared drives to SharePoint.

• We define a coexistence plan, temporary aliases, and routing during the cutover window.
• We lower TTL and update MX, SPF, DKIM, and DMARC records to point to Exchange Online.
• We run deliverability and free/busy calendar tests after cutover.

We coordinate every DNS adjustment to minimize bounces and delays in mail delivery.

We lower TTLs ahead of time, then update MX, SPF, DKIM, DMARC and test send/receive after cutover. Learn more: Email authentication in Microsoft 365 and Configure DMARC.

• Outlook: may require recreating the user profile and reauthentication.
• OneDrive: may need re-linking of the sync client (replaces Drive for desktop).
• Teams: replaces Chat/Meet, requiring sign-in and team reconnection.
• Mobile devices: may require reconfiguration or re-enrollment if managed.

We mitigate impact with pre-communications, user guides, and startup support for end users.

• Number of users, volume of emails/files, and proportion of Shared Drives.
• Available bandwidth and API limits (throttling) from Google and Microsoft.
• Complexity of identities, domains, permissions, and external dependencies.

We estimate timelines during the assessment and always run a pilot before full cutover.

• API throttling: mitigated by batching and using optimal windows.
• Permission or path conflicts: prevented through pre-mapping and validations.
• DNS or deliverability errors: minimized with guided execution and end-to-end testing.
• Functional differences (labels, file types): handled with equivalencies and user communication.

We apply technical controls and always test with pilots before mass migration.

After migration, we provide a stabilization phase with technical support, issue resolution, and proactive monitoring. We also deliver training for Outlook, OneDrive, SharePoint, and Teams, final documentation, and advisory to optimize security, governance, and adoption in Microsoft 365.