Long confined to theory, digital sovereignty is becoming a reality. For private companies in Luxembourg, ignoring this shift risks being left behind in a transforming market.
A political signal turned commercial reality
With the European Commission selecting providers for its €180 million sovereign cloud, Germany mandating open source and France migrating to Linux, this is now a strategic shift. Digital trust is emerging as a competitive differentiator: institutional clients, European partners and end users increasingly question data localisation, confidentiality, exposure to foreign laws and are also more aware of the value of their data.
Digital dependency: an operational and legal risk
For a private sector operator, dependency on foreign solutions is a systemic risk. The US CLOUD Act grants American authorities extraterritorial access to European data, while telemetry, marketed as system protection, quietly channels operational intelligence to foreign jurisdictions beyond any contractual or legal safeguard. This is compounded by risks of unilateral service suspension (e.g. Starlink in Ukraine) and forced obsolescence, such as the end of support for Windows 10.
However, the GDPR clearly requires that organisations know where and by whom data is processed, yet outsourcing typically involves unclear localisation, multiple subcontractors, extra-EU transfers and unilaterally amendable contracts, repeated invalidations of EU-US transfer frameworks offer no remedy, only further uncertainty.
Companies risk becoming mere tenants of their own digital operations, relying on tools and infrastructures they neither own nor control. In case of dispute or cyber incident, this loss of control can be critical.
Digital sovereignty: above all a legal challenge
Transitioning to open systems is not purely technical; it raises underestimated legal risks.
First, exit risks: leaving GAFAM (or BATX) requires retrieving usable data and ensuring contracts allow portability. Inadequate clauses may reveal that companies were effectively leasing their own data.
Second, GDPR implications: changing providers alters subcontracting chains, requiring updated agreements and sometimes impact assessments, and confidentiality and contract audits should run in parallel.
Third, open-source licences and intellectual property: free software remains protected by copyright. Integrating components under strong copyleft licences (e.g. GPL) may require disclosure of source code. Companies must map components, classify licences and define usage policies aligned with their commercial interests.
Fourth, transition risks: during system coexistence, responsibilities overlap while regulatory obligations persist. GDPR requires continuous protection; entities subject to NIS2 must also comply with strict incident notification deadlines. Anticipating vulnerabilities and clarifying responsibilities is essential.
What this means in practice ?
Beyond privacy by design, this is about sovereignty by design: incorporating legal requirements from the outset, underpinned by clear internal policies and awareness programmes, as well as robust contracts (both operational and confidentiality agreements).
Moreover, digital sovereignty requires structured support: contractual audits, mapping of software dependencies and data flows, internal governance rules and staff training, and a review of reversibility clauses. These issues are not limited to large corporations: poorly negotiated SaaS contracts or vendor lock-in can be irreversible.
For organisations based in Luxembourg, particularly in a highly regulated financial environment, this is no longer an ideological choice but a prerequisite for trust and a lever for resilience that must now be fully activated with the right support.
The tools exist, the frameworks are in place, the transition is manageable, and the movement is already underway, the only remaining question is: When to join it?
IIf you have any questions or would like to discuss how these developments may affect your organisation, please feel free to contact Nicolas Thieltgen, Managing Partner at Brucher Thieltgen & Partners. [email protected]
