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Microsoft 365 vs OnlyOffice: Which Excels in Collaboration?

Discover how Microsoft's US-based suite compares to Latvia's OnlyOffice in enhancing collaborative work for your team.

Last updated: February 19, 2026Reviewed by Built in EU Team

Should You Switch to OnlyOffice?

What You Gain

Gain GDPR compliance, EU server hosting, and self-hosting options

Privacy advantage
Trade-offs

Lose advanced AI tools and some integrated task management features

Microsoft 365 has more features
Bottom Line

Switch if privacy and EU hosting are priorities; stay for advanced features

At a Glance

Data Location
🇺🇸US

US data laws

🇱🇻LV

GDPR protected

Pricing

Microsoft 365

Contact

OnlyOffice

freemium

Migration
Medium difficulty~Several hours to a few days, depending on data volume

Privacy & Compliance Comparison

Critical data sovereignty factors at a glance

CriteriaMicrosoft 365OnlyOffice
Server Location
US, EU, and other global locationsEU
GDPR Compliance
Partial (SCCs)Full
Open Source
E2E Encryption
Enterprise onlyOptional
Data Portability
Full exportFull export

CLOUD Act Notice

Microsoft 365 is a US company and must comply with CLOUD Act data requests, even for data stored in EU data centers. OnlyOffice is not subject to US jurisdiction.

Switching from
Microsoft 365 logo

Microsoft 365

🇺🇸

Microsoft

VS
Switching to
OnlyOffice logo

OnlyOffice

🇱🇻

OnlyOffice

US Data Storage

Data subject to US CLOUD Act and may be accessed by US authorities

EU Data Protection

Data protected under GDPR with EU-only data residency

Certifications & Compliance

No certifications listed

GDPR Compliant
EU-Based
Open Source
Self-Hostable

Reasons to Switch

  • GDPR compliance ensures EU data protection standards.
  • Self-hosting allows full control over data storage.
  • Open source offers transparency and customization.
  • MS Office format compatibility reduces conversion issues.

Things to Consider

  • !Migration from Microsoft 365 can be time-consuming.
  • !Lacks AI-powered writing assistance found in Microsoft 365.
  • !Learning curve for users familiar with Microsoft 365.
Migration difficulty:
Medium
~Several hours to a few days, depending on data volume

Migration Overview

Full guide
Difficulty
Medium
Time Estimate
~Several hours to a few days, depending on data volume

Depends on data size and complexity

Quick Steps

1

Create OnlyOffice account and configure settings

2

Export and prepare data from Microsoft 365

3

Import data, test integrations, and migrate users

Note: Switching may require adapting to different interfaces and functionalities between the two products.

Other alternatives to Microsoft 365

Ready to make the switch?

Start using OnlyOffice today and take control of your data privacy.