What is data sovereignty and why does it matter?
- 6 February, 2026
- 4:11 pm
Data sovereignty used to sound like a public-sector discussion. It now shows up in board meetings, procurement requirements, and risk registers across regulated industries. The reason is straightforward: dependency risk is no longer theoretical. When an organisation relies heavily on one ecosystem for identity, email, documents, and daily workflows, it also inherits the impact if that ecosystem becomes constrained—commercially, operationally, or legally.
Two recent developments show the direction of travel. The European Commission has been reported to trial a “sovereign” backup option for internal communications based on the open-source Matrix protocol. In the Netherlands, the Algemene Rekenkamer stated it wants to move away from Microsoft cloud services, while acknowledging such a move takes time.
This article keeps it simple. It explains what sovereignty actually means in practice, why it matters now, and what changes when Microsoft 365 is part of your core operations.
What is data sovereignty?
In plain terms, data sovereignty is about control. Not only where data is stored, but who can influence access, continuity, and change.
In practice, sovereignty comes down to three things. First, jurisdiction: which laws and authorities can apply to the provider and to the data. Second, operational control: who has the levers that determine whether you can keep working, such as identity, admin access, platform configuration, and contractual terms. Third, exit readiness: if you had to switch or restore somewhere else, can you do it realistically, and within business timelines that make sense?
A common misconception is that “EU region” equals sovereignty. Data location helps, but sovereignty is broader than geography. It is about whether you can maintain control when conditions are not ideal.
Why sovereignty matters now
Sovereignty moved up the agenda because organisations are under increasing pressure to demonstrate resilience and manage supplier risk. NIS2 reinforces that cybersecurity risk management is a governance issue tied to management accountability, and it is shaping expectations far beyond the strict legal scope. Auditors, insurers, and enterprise customers are starting to ask more directly how dependency risk is handled and how continuity is assured.
At the same time, lock-in risk has become more visible. Modern platforms are deeply integrated: identity underpins access, access underpins workflows, and workflows underpin revenue and service delivery. That tight coupling is efficient, but it reduces flexibility when something changes. The change might be technical, commercial, regulatory, or triggered by an incident. Sovereignty is essentially the business-friendly way of asking a hard question: are we too dependent to respond under pressure?
Microsoft 365: where sovereignty becomes real
Microsoft 365 is a widely used productivity platform, and for many organisations it is the backbone of daily operations. That’s exactly why it matters in sovereignty discussions. The question is rarely whether Microsoft 365 works. The question is what happens when the tenant becomes compromised, misconfigured, restricted, or otherwise not trustworthy, and the organisation still needs to keep operating.
Sovereignty becomes real when you look at what the platform concentrates. Identity is central. Administrative control is central. Configuration changes can be broad and immediate. Collaboration data is widespread, and business processes tend to sprawl into Teams, SharePoint, OneDrive, and Exchange over time. In short, your operational dependency can become larger than you intended, simply because the platform is convenient and adoption is organic.
Turn data sovereignty into concrete steps
Sovereignty does not require an immediate migration plan. In most organisations, “replace everything” is unrealistic and creates more risk in the short term. A practical approach is to make sovereignty measurable by focusing on a few outcomes that reduce dependency risk regardless of which primary platform you use.
Start by clarifying which processes are truly critical, and what downtime would cost. Then make sure you can maintain operational control over access and recovery, even when the primary environment is under stress. Lastly, keep exit options credible. That means knowing what data you must be able to extract, how long it would take, what dependencies would block you, and what alternative environment you could restore into if needed.
The Dutch public-sector signals referenced earlier are useful not because they prescribe a single answer, but because they show that large institutions are now treating “credible alternatives” as part of responsible risk management, even while acknowledging such transitions are complex.
Conclusion: keep sovereignty simple
EU data sovereignty is rising because dependency risk is rising. The most practical way to approach it is to stop treating sovereignty as a label and start treating it as a set of measurable capabilities. If you can maintain control under pressure, keep critical operations running, and retain realistic exit options, you are moving in the right direction.
Microsoft 365 is part of this conversation because it concentrates identity, data, and workflows. That concentration can be managed, but it should be acknowledged and governed. The organisations that handle this well are the ones that can answer leadership questions calmly, with clarity and evidence, before an incident forces those questions onto the agenda.
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Frequently asked questions
Does data sovereignty mean we must leave Microsoft 365? +
Not necessarily. Many organisations will continue using Microsoft 365 while improving governance around operational control, dependency risk, and exit readiness. The key is to understand where dependency is concentrated and what your realistic options are under stress. Sovereignty is not an ideology; it’s resilience planning. In practice, it is often improved incrementally rather than through a single large migration.
Is “EU data location” enough to claim sovereignty? +
EU data location is helpful, but it is not the full story. Sovereignty also depends on jurisdictional exposure, contractual control, and who holds operational levers like admin access and identity. Organisations should be able to explain how control is maintained when conditions are not ideal. That explanation is what boards, auditors, and insurers increasingly expect.
What is the fastest way to improve sovereignty without a major project? +
Start with clarity and documentation rather than technology changes. Map which business processes depend on Microsoft 365, which identities and admin roles have “blast radius,” and what data you would need to extract or restore first if you had to operate under constraints. Then reduce single points of dependency by tightening governance: limit and monitor privileged access, separate duties where possible, and make sure you have a realistic, tested path to access critical information if the primary environment is not trustworthy. Finally, agree internally on what “good enough” looks like—so you can answer leadership questions with facts instead of assumptions.