EU hosting available (Austria)

Less Microsoft.
More Independence.

You don't have to replace everything at once. We help you become independent step by step – at your pace, with your employees on board.

Led by a team with experience from ETH Zurich, Nagra, and enterprise IT – technology and change management under one roof.

Book a 15-min call Find out where to start

Why businesses are switching

🔒 Regain data sovereignty
📋 Meet regulatory requirements
💰 Save 35-55% on license costs
🤝 Hybrid transitions – no hard cut
20+ Years IT experience (ETH, Nagra)
DACH Austria · Germany · Switzerland
2025 Founded – agile & owner-led

Why Act Now?

Digital sovereignty isn't a buzzword – it's a strategic necessity that's becoming more urgent by the day.

The Risk Is Growing

  • US Cloud Act & FISA 702 US authorities can access your data – even on EU servers. Under FISA 702, this has already happened.
  • Legal uncertainty The EU-US Data Privacy Framework took effect in July 2023 – but privacy experts like Max Schrems warn it may fail at the CJEU, just like Safe Harbor (2015) and Privacy Shield (2020).
  • Vendor lock-in The longer you wait, the deeper the dependency: more data, more integrations, more habits – and the more expensive the exit.

The Way Out

  • Step-by-step migration No hard cut – start where it makes the most sense and expand at your own pace.
  • Hybrid operation possible During the transition, old and new systems run in parallel. No risk, no downtime.
  • Data in Europe Hosting in Austria, under European law. Open source = you keep control at all times.
The reality: US policy is increasingly unpredictable. The Cloud Act is in effect. Your Microsoft contract ties you to US-controlled infrastructure. Your clients ask about GDPR compliance. How fast can you respond?

Those who start today have options tomorrow. Those who wait have a problem.

The New Regulatory Reality

European regulation has made the path to digital sovereignty not just easier – but increasingly necessary.

Since Oct 2024

NIS2 Directive

Expanded cybersecurity obligations for more industries. Strict supply chain and third-party requirements – your cloud providers are under scrutiny.

Since Sep 2025

EU Data Act

Data portability and cloud switching are now your right. Providers must facilitate migration – strengthening your negotiating position.

Trend

Digital Sovereignty as Policy

EU and national governments are increasingly pushing for independence from non-European technology. Migration is politically supported and funded.

These regulations make the business case for you: migration has never been easier to justify internally.

What Does Your Dependency Cost?

The strategic reasons speak for themselves. But the numbers are on your side too.

💰 Quick Calculator

You currently pay approx.: €7,500/year
Potential savings: €2,625 – €4,125/year

Estimate incl. hosting. Detailed analysis in free consultation.

Apply to your case? Let's find out

Our Core Project: From Microsoft 365 to Nextcloud

Most of our clients start here. It's the migration with the biggest impact – and we've thought through every detail.

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Replaces: Outlook & Exchange (via Mailcow), Word, Excel, PowerPoint, Teams, OneDrive, SharePoint

Savings: 35-55% of ongoing IT costs

Duration: 3-4 months for 50 users

How the transition works

No switchover day: Your employees start working in both systems – the transition happens gradually and seamlessly.
Test first, then roll out: A small group starts first. The rest follow only once everything works.
Nobody gets thrown in the deep end: Every employee is prepared before anything changes at their workstation.
All data migrated: Emails, calendars, contacts, files – everything comes along, nothing is lost.
From Practice

How a 50-person firm replaced Microsoft 365

A mid-sized engineering firm wanted more independence. In 4 months, we migrated email, calendar, files and video conferencing to Nextcloud and Mailcow – without productivity loss.

47%Cost reduction
4 monthsDuration
0Data loss

We work with companies from 10 employees up.

"Some were skeptical at first. But after two weeks, nobody talked about Microsoft anymore."
— IT Manager (name on request)
Sound like your situation? Let's talk.

After Migration: Next Steps Toward Digital Sovereignty

Once the foundation is in place, you can go further – but you don't have to. Each step brings more independence.

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Cloud Repatriation

GDPR-compliant, no US Cloud Act. 2-6 months depending on complexity.

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Linux Desktops

Save 100% on license costs. Ideal for office workstations and administrative roles.

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Identity Management

SSO, MFA, LDAP, SAML. Typically the last step of the migration.

All solutions in detail

Our Process

From analysis to ongoing operations – we guide every step.

Step 2

Roadmap & Pilot

Clear plan with milestones. Small pilot group tests the new systems first.

4-8 weeks

Step 3

Training & Rollout

Employees trained before the switch – on "how" and "why". Phase-by-phase rollout.

8-16 weeks

Optional

Managed Hosting

We host your applications on our servers in Austria. Full control, predictable costs.

From €5/user/month

Ongoing

Support

After migration we're still here. Personal contact with people who know your systems.

Response <4h

Result

Independence

Your data on your terms. Independence you can build on.

ROI in 18-24 months

The underestimated risk

IT projects fail because of people, not technology

IT installs new software, sends an email, and wonders about the resistance. "The old system was better." "Nobody explained this."

We do it differently: Employees involved from day 1. Training not just on "how" but on "why".

Experience from large projects (ETH Zurich, Nagra)
Change management expertise from consulting
Open source users ourselves for 15+ years
More about our approach
"Only 30% of digital transformation projects achieve their goals."
– McKinsey Digital, 2023

Most common reason? Lack of employee involvement and poor change management.

Public Sector

For Government and Public Administration

Compliance requirements, public procurement rules, legacy IT landscapes -- we understand the constraints. From local municipalities to state-level agencies, from schools to hospitals.

Successful reference projects across Europe:

Schleswig-Holstein (LibreOffice) French Gendarmerie (Ubuntu) Italian Military (LibreOffice) City of Munich (LiMux -- lessons learned)
Public sector solutions
Digital sovereignty for the public sector

Technologies we work with

15 minutes that could pay off

In a free consultation, we look at your situation and show you where you can start. No slides, no sales pressure.

Book a free consultation

Or email: servus@quelloffen.at