Microsoft Solutions Partner for Modern Work
Migrate from Google Workspace to Microsoft 365
Build AI-powered applications with AI at the core — grounded in your data, connected to your systems, and engineered for production across OpenAI, Anthropic, Google Cloud, AWS and Microsoft Azure.
Trusted by organisations moving from Google Workspace to Microsoft 365. Confirm the final migration count before publishing any numeric claim.
15+ Years
50+ Specialists Microsoft
Microsoft Solutions Partner for Modern Work
Built across the major agent ecosystems
Copilot Studio
Azure AI Foundry
AWS Bedrock
Google Vertex AI
OpenAI
LangChain / LangGraph
Make the Move from Google to Microsoft
01
Standardising on Microsoft but still using Google for email and files?
02
Worried Google Docs and Sheets won’t survive the move to Office?
03
Can’t risk losing email or facing downtime during the switch?
Want Teams, the desktop Office apps, and Copilot you can’t get in Google?
What We Do
Why Choose Our Google Workspace to Microsoft 365 Migration Services
01
The whole suite, not just email
We migrate Gmail, Drive, Shared Drives, calendars, contacts, Groups, and Sites—not just mailboxes.
02
Files converted, not just copied
We convert Google Docs, Sheets, and Slides to Office formats and validate complex documents.
03
Permissions preserved
We map Shared Drive and folder permissions into SharePoint and OneDrive instead of flattening access.
Data validated before cutover
We reconcile migrated mail and files before cutover and review exceptions before sign-off.
05
Minimal downtime
Planned coexistence and DNS cutover help keep users productive throughout the migration.
06
Microsoft 365 ready for what’s next
You move to a Microsoft 365 foundation built for Teams, Office apps, and future Copilot readiness.
Our Services & Capabilities
01
Email Migration (Gmail → Exchange Online)
We migrate Gmail — full folder/label structure, sent items, and rules — into Exchange Online with completeness verified.
- Full mail + labels/folders
- Rules & settings
- Completeness verification
02
Calendar & Contacts Migration
We move Google Calendar events (including recurring meetings and shared calendars) and Google Contacts into Microsoft 365.
- Events & recurrences
- Shared calendars
- Contacts & groups
03
Drive & Shared Drive Migration
We migrate My Drive and Shared Drives to OneDrive and SharePoint, mapping permissions and preserving structure.
- My Drive → OneDrive
- Shared Drives → SharePoint
- Permission mapping
04
Document Conversion (Docs/Sheets/Slides → Office)
We convert native Google formats to Word, Excel, and PowerPoint, validating complex documents so formatting and formulas hold up.
- Native Office conversion
- Formula & layout checks
- Complex-doc validation
05
Identity & User Provisioning
We provision users in Entra ID, align identities, and set security basics (MFA) so people sign in cleanly on day one.
- Entra ID provisioning
- Identity alignment
- MFA & security basics
06
Domain & DNS Cutover
We handle MX, SPF, DKIM, DMARC, and autodiscover so mail routes to Microsoft 365, deliverability is protected, and your website is untouched.
- MX & autodiscover
- SPF / DKIM / DMARC
- Zero website impact
07
Groups, Sites & Collaboration
We migrate Google Groups and Google Sites to Microsoft 365 Groups and SharePoint, and help your team get started in Teams.
- Groups → M365 Groups
- Sites → SharePoint
- Teams onboarding
08
Pre-Migration Assessment
Assess mailbox volume, Drive structure, permissions, and migration complexity to identify risks early.
- Readiness assessment
- User analysis
- Shared Drive revie
Have a Google service not listed here? Tell us what you use.
Google-to-Microsoft Mapping Matrix
| Google Workspace | Microsoft 365 | What we handle |
|---|---|---|
| Gmail | Exchange Online | Mail, labels/folders, rules, completeness verification |
| Google Calendar | Exchange Online calendar | Events, recurrences, shared calendars |
| Google Contacts | Exchange Online contacts | Personal & shared contacts |
| Google Drive (My Drive) | OneDrive for Business | File migration, structure, sharing |
| Shared Drives | SharePoint Online | Content + permission mapping, governance |
| Google Docs / Sheets / Slides | Word / Excel / PowerPoint | Native-format conversion + validation |
| Google Groups | M365 Groups / distribution lists | Membership & mail routing |
| Google Sites | SharePoint Online | Site content migration |
| Google identities | Entra ID (Azure AD) | User provisioning, identity alignment, MFA |
Not sure how your setup maps? Our free assessment inventories your Google environment and plans the cleanest path to Microsoft 365.
Our Google-to-Microsoft 365 Migration Methodology
Free assessment & inventory
We inventory your Google environment — users, mail and Drive volumes, Shared Drives, document types, Groups, and Sites — and recommend the right Microsoft 365 plan. No cost, no obligation.
Tenant setup & identity
We provision your Microsoft 365 tenant and users in Entra ID, with security basics (MFA) and coexistence configured.
Pilot migration
We migrate a representative group’s mail and files, validate fidelity and document conversion, and confirm the approach with you.
Mail, calendar & contacts migration
We migrate Gmail, calendars, and contacts while running alongside Google so nothing stops.
Drive & document migration
DNS cutover & validation
We update MX, SPF, DKIM, DMARC, and autodiscover, reconcile source vs target for zero data loss, and you sign off before cutover
Cutover, adoption & support
We switch users over, set up Outlook and devices, support early-life issues, and help your team adopt Teams and the Office apps
Phase 1 is a free assessment. No obligation.
Why Star Knowledge
| Criteria | Star Knowledge | In-House DIY | Generic IT Provider |
|---|---|---|---|
| Scope | Full-suite migration across mail, files, formats, identity, groups, permissions, DNS, validation, and adoption support | Often email-only | Partial |
| Document conversion | Docs/Sheets/Slides validated in Office | Manual, error-prone | Inconsistent |
| Shared-drive permissions | Mapped into SharePoint | Frequently flattened | Variable |
| Data fidelity | Verified, nothing lost | High risk of loss | Mixed |
| Downtime | Coexistence + planned cutover | Likely disruption | Variable |
| Microsoft expertise | 50+ specialists, Solutions Partner | Learning curve | Generalist |
| Copilot readiness | Clean, Copilot-ready tenant | Not considered | Not considered |
| Track record | 35+ Google-to-M365 migrations | First-time | Mixed |
Case Studies
US healthcare organization, 6,500+ employees
Exchange Online, SharePoint Online, Microsoft Teams, Microsoft Entra ID
Migrate thousands of users without disrupting patient care
A phased Microsoft 365 migration across mailboxes, files, and Teams
USA-based IT Services and SaaS company
Microsoft 365 (E3 licenses), Microsoft Defender, Microsoft Intune, Azure AD, Google Workspace (source), Google API
Migrating 122 mailboxes and 2TB of data without disrupting the business
A meticulously planned E3-licensed migration with built-in Microsoft 365 security
Enterprise organization migrating from Google Workspace
Microsoft 365, Exchange Online, SharePoint Online, OneDrive, Microsoft Teams, Entra ID
Moving terabytes of mail and files without breaking business continuity
A phased migration from Google Workspace to a secure Microsoft 365 environment
Industries We Serve
Technology & SaaS
Standardising on the Microsoft stack
Professional Services
Office compatibility and secure client data
Financial Services
Enterprise security and compliance controls
Healthcare
HIPAA-aligned governance and access
Non-profits
Microsoft nonprofit pricing and an integrated suite
Education
Manufacturing
Multi-site collaboration and document control
Agencies & Media
Teams and SharePoint for client work
From small teams to thousands of users and multi-terabyte Drives, we scale to fit.
Insights
Blog
Google Workspace to Microsoft 365 Migration: Seamless Collaboration Transition
Landing on a Copilot-Ready Microsoft 365 (2026)
If you’re standardising on Microsoft in 2026, Microsoft 365 Copilot is a major reason. Copilot works across your Microsoft 365 mail, files, and Teams content — so migrating your Google environment into a well-structured Microsoft 365 tenant gives Copilot a clean, complete estate to work from, rather than leaving it split across two platforms.
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Consolidation — bringing mail and files into Microsoft 365 gives Copilot one place to work across
02
03
Enable when ready — you land on a Copilot-capable tenant and turn it on when it suits you
Does migrating from Google to Microsoft 365 prepare us for Copilot?
Yes. Microsoft 365 Copilot runs on a Microsoft 365 estate, so consolidating your Google mail and files into a clean, well-permissioned tenant is exactly the foundation Copilot needs. We build that in so you can enable Copilot safely when you’re ready.
Frequently Asked Questions
Will my email keep working during the migration?
Yes. We provision Microsoft 365 alongside Google and use coexistence so mail flows during the move, then schedule the DNS cutover to minimise impact. Most users keep working throughout and simply find their mail already in their new Microsoft 365 mailbox.
Will I lose any email or files?
No. We migrate mailboxes and Drive content in full, map Shared Drive permissions, and reconcile source against target to verify completeness before cutover. Nothing is removed from Google until you’ve confirmed everything arrived.
Do Google Docs, Sheets, and Slides convert to Office?
Yes. Native Google files are converted to their Office equivalents — Docs to Word, Sheets to Excel, Slides to PowerPoint. Most content converts cleanly; we validate complex documents (advanced formulas, intricate layouts) during a pilot so you know exactly what to expect.
What happens to Shared Drives and their permissions?
Shared Drives migrate to SharePoint with their structure intact, and we map Google’s sharing model into SharePoint permissions rather than flattening access. Migration is also a good moment to tidy up over-broad sharing.
How long does a Google Workspace to Microsoft 365 migration take?
It depends on user count and Drive volume. A small team (under 50 users) often migrates in 1–2 weeks. A mid-market organisation (50–500 users) takes 2–5 weeks. Larger organisations with multi-terabyte Drives take 4–10 weeks. Your free assessment gives a firm timeline.
How much does the migration cost?
Migration is a project fee based on users, data volume, Shared Drive complexity, and document-conversion scope. The calculator uses an indicative rate of $400–$600 per project day to estimate a range. Microsoft 365 licences are billed separately. Your assessment confirms the final scope, timeline, and fixed quote.
Do my calendars and contacts move too?
Yes. Google Calendar events — including recurring meetings and shared calendars — and Google Contacts are migrated into Microsoft 365 along with your mail.
What about Google Groups and Google Sites?
We migrate Google Groups to Microsoft 365 Groups or distribution lists (preserving membership and mail routing) and Google Sites content to SharePoint, so your collaboration setup carries over.
Book My Free Migration Assessment
Tell us the task you have in mind. We’ll assess whether an agent suits it, at what autonomy level, and what the first step should be.
- No cost, no obligation
- Typically responds within 4 business hours
- Confidential — your data isn't shared
- Migration plan reviewed by a Microsoft 365 specialist
Typically responds within 8 business hours · Confidential
Document conversion is not included.
Get My Detailed Migration PlanEstimates use typical Google-to-Microsoft 365 migrations by users and data volume; your free assessment produces a fixed scope and quote.