Digital Sovereignty: Why Europe Is Pulling Away From the American Tech Stack

For years, European governments ran on American infrastructure with little public debate. Windows on the desktop, Microsoft 365 for email and documents, Google or Microsoft cloud services holding everything from health records to court files. It worked, it was familiar, and nobody in Brussels or Berlin lost much sleep over where the servers actually sat.

That has changed considerably over the past couple of years, and 2026 has been the year the shift moved from talk to formal policy. This article explains what digital sovereignty means in practice, why it has become urgent now, what it could mean for ordinary citizens in the countries involved, and what it means for Microsoft and Google, the two companies most exposed to the change.

What Digital Sovereignty Actually Means

At its simplest, digital sovereignty is the idea that a government should not depend on infrastructure it does not legally control for its most sensitive data. The concern is not really about server location. European data protection rules have required data to be stored within the EU for years, and most American cloud providers already comply.

The deeper issue is jurisdiction. Under the US CLOUD Act of 2018, American authorities can compel a US-headquartered company to hand over data it holds, regardless of where that data is physically stored. A server in Frankfurt run by an American company is still, in a legal sense, reachable by US law. European officials have concluded that no amount of contractual reassurance changes that underlying fact, since a foreign government’s legal power over its own companies cannot simply be signed away.

Why This Has Become Urgent Now

The European Commission presented its Technological Sovereignty Package in mid-2026, with the Cloud and AI Development Act at its centre. This introduces a formal sovereignty assessment for public-sector digital contracts, and at its most restrictive tier, blocks American cloud giants entirely from the most sensitive government workloads, covering areas such as health, finance and judicial data.

• American companies handle roughly four fifths of the EU’s professional cloud spending, a concentration European policymakers now treat as a strategic exposure rather than a simple market outcome
• Years of GDPR enforcement, including several national rulings against specific US-based tools over how they handle transatlantic data transfers, have added legal pressure on top of the political case
• Deteriorating relations with the Trump administration, including tariff disputes and rhetoric that unsettled European allies, sharpened the political appetite for reducing dependency that had been building for years
• The scale of the market itself has grown the stakes considerably, with sovereign cloud spending across Europe forecast to roughly triple between 2025 and 2027

What Countries Are Already Doing

This is not purely theoretical policy sitting in Brussels. Several European governments have already begun acting, in some cases years ahead of the formal EU-level package.

• Denmark’s Ministry of Digitalisation began moving away from Microsoft 365 and Windows towards LibreOffice and Linux, following similar moves by the cities of Copenhagen and Aarhus
• Germany’s Schleswig-Holstein region has switched roughly 30,000 government workplaces from Microsoft software to Linux and open-source alternatives
• France’s Toulouse migrated the large majority of its desktops to LibreOffice, and national bodies in France and Germany are jointly developing an open, web-based alternative to Microsoft and Google’s office tools
• Italy’s Ministry of Defence has projected significant savings from moving away from Microsoft Office across its operations

Officials involved have generally framed this as reducing dependency rather than isolation, and several have kept a fallback option in place in case the transition proves more difficult than planned.

What the Future Could Look Like for Citizens

For most people, the immediate, visible effects will likely be modest. A citizen renewing a passport or booking a hospital appointment is unlikely to notice which cloud platform sits behind the system. More meaningful changes will likely unfold gradually, over several years, in a handful of areas.

• Public-sector staff in some countries will increasingly work in open-source software rather than familiar commercial tools, which could mean a genuine adjustment period and, in some cases, compatibility friction with documents shared by businesses still using Microsoft formats
• Government IT budgets could shift meaningfully away from licence fees towards funding domestic and European alternatives, a change some officials argue will produce long-term savings, though the transition costs are real in the short term
• Citizens may gain a clearer, more legally grounded assurance that their sensitive government data sits under European rather than foreign jurisdiction, addressing a concern that has grown alongside rising GDPR enforcement activity
• Innovation and feature rollout for citizen-facing digital services could, at least initially, lag slightly behind what commercial American platforms offer, since domestic and European alternatives are working to close a genuine capability gap

Whether this ultimately strengthens European digital independence or simply adds cost and friction without a proportionate security benefit remains a genuinely open question, and reasonable people within the industry disagree on the answer.

What This Means for Microsoft and Google

Both companies have moved to protect their position rather than dismiss the concern outright. Microsoft has expanded its European data centre capacity and introduced a Sovereign Public Cloud model that keeps data within the EU and is operated by European personnel, alongside national partner arrangements such as Bleu in France and Delos Cloud in Germany. Google has taken a broadly similar path, reaffirming its commitment to EU sovereignty and substantially increasing its European data centre capacity, often working through European partners who hold the encryption keys.

Neither company has been able to remove the underlying legal issue entirely. During a French parliamentary hearing, Microsoft confirmed directly that it could not guarantee European data would never be requested by US authorities, since no amount of technical or contractual arrangement changes what the CLOUD Act allows. This is the crux of the tension both companies now have to manage: reassuring European customers as far as genuinely possible, while being unable to make the one promise that would fully resolve the concern.

Commercially, the near-term impact looks more like margin erosion than a dramatic loss of market share. Both companies remain deeply embedded in European business and government infrastructure, and switching costs for large organisations are considerable. The bigger risk is longer-term and structural: a steady drift of new public-sector contracts and sensitive workloads toward European-native or heavily localised alternatives, particularly if today’s political tensions do not ease.

Things Worth Watching Over the Next Few Years

☐  Whether the Cloud and AI Development Act’s most restrictive tier is applied broadly or narrowly in practice once member states begin implementing it

☐  Whether European alternatives can genuinely close the capability gap with US hyperscalers, particularly in AI infrastructure, or whether this becomes a persistent weak point

☐  How smoothly early movers like Denmark and Schleswig-Holstein manage their transitions, since visible problems could slow enthusiasm elsewhere

☐  Whether US-EU political relations stabilise, which would likely reduce the political urgency even if the underlying legal concerns remain

☐  Whether private businesses, who are not directly bound by these government-focused rules, begin following the public sector’s lead voluntarily

Frequently Asked Questions

Does this mean Microsoft and Google are being banned in Europe?

No. The restrictions target the most sensitive tier of public-sector data, such as health, financial and judicial systems, not the general market. Private businesses and most public bodies remain free to use Microsoft, Google or any other provider they choose, and both companies continue to operate extensively across Europe.

Why can’t Microsoft or Google simply guarantee data will stay in Europe?

Because the concern is jurisdictional rather than physical. Under the US CLOUD Act, American authorities can compel a US-headquartered company to hand over data it controls, regardless of where that data is physically stored. Since Microsoft and Google remain American companies, this legal exposure cannot be removed through data centre location or contractual promises alone.

Will this make government IT more expensive or less reliable in the short term?

Quite possibly, in the short term. Migrations of this scale generally involve training, compatibility issues and transition costs before any savings materialise. Several governments undertaking these moves have built in fallback options for exactly this reason, recognising that a smooth switch is not guaranteed.

Are European alternatives actually good enough to replace US providers?

Opinions genuinely differ. Proponents point to real, sizeable investment in European sovereign cloud infrastructure and successful early migrations. Sceptics point to Europe’s mixed track record in this space and note that matching the scale, maturity, and AI capability of the largest US hyperscalers is a considerably harder task than switching an office suite.

Could something similar happen outside government, in the private sector?

It is possible, though nothing currently compels it. Some European businesses, particularly in regulated industries, are voluntarily considering similar moves for risk-management reasons. Whether this becomes a wider trend will likely depend on how the political and legal picture develops over the next few years, rather than on the government rules themselves.

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