Publish Date
18/09/2026
Categories
Blogs
For many organisations, moving from Google Workspace to Microsoft 365 is not just an email project. It is a chance to strengthen security, compliance, governance, identity, user management and device control, while making day-to-day IT easier to manage.
The best migrations do more than move data. They start with a clear design for the new Microsoft 365 environment, including decisions about permissions, compliance, security policies, device management and user adoption.
This guide explains the key areas to plan before moving from Google Workspace to Microsoft 365, including what can be migrated, where extra care is needed and how to reduce disruption before, during and after cutover.
What Changes When You Move from Google Workspace to Microsoft 365?
One of the most common misconceptions about migration projects is that they are primarily about email. In reality, email is often the easiest part of the process.
A move to Microsoft 365 affects more than inboxes. Users may move from Gmail to Outlook, but they may also start using OneDrive, SharePoint, Teams, Microsoft Entra ID and Microsoft’s security and compliance tools.
That makes planning critical. File storage, Teams, SharePoint, permissions, access policies, compliance settings and device management should be designed before migration starts, not fixed afterwards.
The organisations that take this approach usually see smoother adoption and fewer post-migration issues.
What can be migrated and where should it go?
Most Google Workspace content can be moved to Microsoft 365, but the destination matters as much as the source.
| Google Workspace | Microsoft 365 Destination | Planning Consideration |
|---|---|---|
| Gmail | Exchange Online and Outlook | How will mailboxes, aliases and delegates be mapped? |
| Google Calendar | Exchange Online Calendar | Are there shared calendars or resource bookings to review? |
| Google Contacts | Exchange Online Contacts | Are contact records complete and accurate? |
| My Drive | OneDrive for Business | Who owns the content after migration? |
| Shared Drives | SharePoint Online or Microsoft Teams | What should the future collaboration structure look like? |
| Google Docs | Microsoft Word | Does formatting remain consistent after conversion? |
| Google Sheets | Microsoft Excel | Are formulas, scripts or integrations affected? |
| Google Slides | Microsoft PowerPoint | Do presentations require validation after conversion? |
| Users and Groups | Microsoft Entra ID | How will identities and security controls be managed? |
| Google Chat | Microsoft Teams Chat | Which conversations need to be retained, exported or recreated? |
| Google Spaces | Microsoft Teams Channels | Which spaces, files or collaboration records need to be retained, exported or recreated? |
Email, calendars and contacts typically move into Exchange Online, giving users access through Outlook on desktop, mobile and web. Personal files usually move into OneDrive for Business, giving each user secure storage within Microsoft 365.
Shared content needs more thought. Google Shared Drives do not always map neatly into SharePoint or Teams, so this is a good opportunity to improve the structure rather than recreate old habits.
Google Docs, Sheets and Slides can usually be converted into Word, Excel and PowerPoint formats. Cobweb would normally recommend testing representative files first, especially where documents include complex formatting, advanced formulas, scripts, embedded content or business-critical templates.
Identity, user management and device security should be planned early. User accounts, groups, licensing, multifactor authentication, conditional access, endpoint enrolment and management policies all need to be mapped into Microsoft Entra ID and Microsoft Intune.
Google Chat and Google Spaces should also be reviewed during discovery. Some conversations, attachments, retention settings or integrations may need to be migrated, exported, archived or recreated in Microsoft Teams.
What may not transfer exactly?
Modern migration tools are highly capable, but not every setting, file attribute or user experience will be identical afterwards.
The areas that usually need the closest review are the ones users notice most: vacation settings, room bookings, shared calendars, delegated access, event colours, contact fields and long-standing sharing arrangements.
Files also need careful review. Restricted files, shortcuts, oversized files, orphaned content, Google Sites, embedded objects, comments, version histories, specialist formats, Apps Script automations and third-party integrations may all require a different approach.
Sharing also needs attention. Existing links, external access, permissions, comments, workflows, third-party integrations and automated processes may not behave in the same way after migration.
Some Google services or configurations have no direct Microsoft 365 equivalent. Chat history, Spaces, Google Sites, forms, custom workflows, scripts, device settings and admin policies may need to be exported, rebuilt, replaced or left behind.
Migration should therefore be treated as a planning and change project, not a simple copy-and-paste exercise.
Planning your migration successfully
Every successful Google Workspace migration starts with a clear understanding of the desired outcome.
Some organisations are driven by compliance, governance and security. Others want stronger user management, better device control, simpler administration or access to the wider Microsoft ecosystem. Clear goals at the start make the migration easier to plan and easier to measure.
Once the objectives are agreed, discovery can begin. Users, mailboxes, Shared Drives, file volumes, permissions, external sharing, applications and automations all need to be reviewed before a migration plan is finalised.
The Microsoft 365 tenant should then be designed and validated before data is moved. That includes licensing, Exchange Online, OneDrive, SharePoint, Teams, Microsoft Entra ID, device management, endpoint security, conditional access, compliance, governance and retention policies.
The migration approach should be shaped by the organisation’s data, risk profile, timeline and support needs. Some environments can use native tools, while others need specialist platforms, staged coexistence, additional reporting or more detailed validation.
Pilot migrations help reduce risk. By testing representative users, departments and workloads first, organisations can identify issues with permissions, mail flow, mobile access, file conversion or integrations before wider rollout.
Business change management is just as important as the technical plan. Users may need help moving from Gmail to Outlook, working in Teams, finding files in OneDrive and SharePoint, responding to new security prompts or enrolling devices. Clear communications, training and hypercare support can make the difference between a technically successful migration and one users actually embrace.
Building a Cutover Plan That Protects Business Continuity
Cutover planning determines how the migration feels to users.
Some organisations move everyone at once. Others prefer a staged approach. The right model depends on business requirements, risk tolerance and operational constraints.
Whatever the approach, preparation matters. DNS changes, MX record updates, final synchronisation activities and application switching points should be documented and tested in advance.
Users need to know what is changing, when it is changing and what they need to do. Managers need visibility of any operational impacts, and external partners or customers may need advance notice if service availability is likely to be affected.
With the right preparation, most users should experience little disruption. The quality of planning often determines how smooth the first working day after cutover feels.
Validating the Migration
A migration is not complete simply because the data has arrived in Microsoft 365.
Email should be tested thoroughly to confirm mail flow, aliases, shared mailboxes and delegated access. Calendars and mobile devices should also be checked so users can continue working normally.
File migration validation should go beyond checking that data exists. Permissions, ownership, search and sharing should be reviewed, with representative files opened and tested where conversion from Google formats has taken place.
Security controls need the same attention. User sign-in, multifactor authentication, administrative permissions, conditional access, device compliance, endpoint enrolment and mobile access should all be verified before sign-off.
User feedback should also be part of validation. Technical success does not always mean business success, so training follow-up and visible support help identify adoption issues before they become larger support problems.
What affects Cost & Timeline?
How long a migration takes, and how much it costs, depends on the environment being moved.
User numbers matter, but they are rarely the only factor. Data quality, Shared Drive complexity, permissions, compliance requirements and external sharing often have a bigger impact on effort than headcount alone.
The Microsoft 365 design can also affect scope. Security configuration, device management and business change management may all sit alongside the migration itself. Training and adoption can represent a significant part of the project cost, particularly where teams need to change established processes because of the move from one productivity ecosystem to another.
That is why discovery and assessment are usually the first stage. Without a clear view of the source environment, accurate budgets and timelines are difficult to provide.
When should you use a Migration Partner?
Many organisations have the technical skills to migrate data. The bigger question is whether they have the time, experience and resources to manage the wider change successfully.
A migration partner is particularly valuable where environments include multiple domains, large Shared Drives, complex permissions, regulated data or critical business systems. It can also help where disruption must be kept to a minimum or internal resource is limited.
A good migration partner should deliver more than data transfer. Cobweb supports discovery, solution design, pilot testing, cutover management, security and compliance configuration, device management, user communications, training, adoption planning and post-migration support.
Because Cobweb works across Microsoft 365, security, identity, compliance, device management and managed support, we see migration as part of the wider operating model. The goal is not simply to move customers into Microsoft 365, but to help them use it well once they arrive.
Ready to plan your move to Microsoft 365?
A successful migration starts long before data is moved. It starts with understanding what you have today, what you want Microsoft 365 to deliver and where the risks or complexities are likely to appear.
Cobweb can help you assess your Google Workspace environment, design the right Microsoft 365 structure, identify migration risks, plan user and device management, and build a practical approach for cutover, validation, adoption and ongoing support.
Whether you are exploring your options or already preparing to migrate, involving Cobweb early can help reduce disruption, avoid hidden costs and make sure Microsoft 365 is designed around the way your organisation actually works.
Contact Cobweb to arrange a migration assessment and take the first step towards a smoother move from Google Workspace to Microsoft 365.
→ Your Google Workspace to Microsoft 365 downloadable checklist
FAQs – Google Workspace to Microsoft 365
Every project is different. Timelines are influenced by user numbers, data volume, Shared Drive complexity, integrations, security requirements and the migration methodology selected.
Yes. These workloads are commonly migrated into Exchange Online, although the exact capabilities depend on the migration tool and approach being used.
They can be converted into Word, Excel and PowerPoint formats during migration. Testing representative files before migration is recommended.
Yes. However, organisations should review how content will be structured within Microsoft 365 rather than attempting to recreate their existing environment without changes.
This depends on how permissions have been configured and how the migration has been planned. Existing sharing arrangements should always be assessed during discovery.
Yes. Many organisations choose a phased approach to reduce disruption and allow lessons learned from earlier migration waves to inform later stages.
Costs vary according to complexity, data volumes, compliance requirements, tooling, project management and support needs.
The most successful projects provide clear communications, user training, accessible support channels and a defined hypercare period following cutover to help users adapt to their new environment.