The debate surrounding digital sovereignty has long since moved beyond being merely a topic for the future. For companies in the industrial and plant engineering sectors, control over where their data is stored is increasingly becoming a key strategic issue. Consequently, more and more organisations are opting for data repatriation.
What is meant by data repatriation?
Data repatriation, also known as cloud repatriation, refers to the return of business-critical data and applications from international public cloud environments to legally controllable European infrastructures. The analyst firm Gartner predicts that by 2030, more than 75 per cent of companies in Europe and the Middle East will have moved their virtual workloads to geopolitically safer environments. Today, this figure stands at less than five per cent.
Why are companies bringing their data back from the US cloud?
For a long time, US hyperscalers such as AWS, Microsoft Azure and Google Cloud were considered to have no alternatives. However, the regulatory landscape has changed fundamentally, and a key driver of this is the US CLOUD Act. The Act obliges US cloud providers to grant US authorities access to data upon request, even if that data is physically stored in Europe. This creates serious legal risks for European companies: compliance conflicts with the GDPR and NIS-2, uncertainties regarding customer contracts and confidentiality obligations, as well as potential liability issues.
This is particularly critical in the industrial and plant engineering sectors, as well as in the energy industry. Engineering documents, test reports, audit trails and approval documentation are closely linked to certifications and security interests. Anyone who stores this data in an infrastructure that cannot be fully controlled not only risks data protection issues but also jeopardises competitiveness and operational security.
Why are DMS and QMS data particularly critical?
Document management systems (DMS) and quality management systems (QMS) contain a company’s most sensitive information: technical design documents, maintenance and test histories, commissioning reports, supplier qualifications and safety-critical circuit diagrams. A plant engineer who designs power stations or complex production lines stores their company’s entire technical know-how in these systems, often supplemented by customer-specific quality certificates that are subject to strict contractual confidentiality obligations.
If this data is hosted by a US hyperscaler, a conflict arises between regulatory responsibility and potential external access to the data – a conflict that cannot be ignored in the long term.
Four steps to successful data repatriation
A common mistake is to view data repatriation as purely an infrastructure project. In fact, it is a complex transformation process that affects IT, compliance, quality management and business departments in equal measure.
Based on Fabasoft Approve’s project experience, four key success factors can be identified:
1. Establish data classification and transparency
The first step is to carry out a comprehensive review of your organisation’s data landscape: what data is stored where, who has access to it, and what regulatory requirements apply? Many organisations find that their infrastructure has evolved over time and is rarely fully documented.
2. Prioritise critical systems
It is then advisable to carry out a prioritised migration, i.e. to migrate particularly critical systems such as engineering documentation, change management processes and audit documentation first.
3. Consider integration at an early stage
It is equally important to consider system integrations at an early stage. DMS and QMS are closely linked to ERP, PLM and production applications. Failure to plan for these dependencies from the outset risks data inconsistencies and delayed approval processes.
4. Ensure governance and compliance
Finally, governance must be part of the architectural planning from the outset: audit-proof archiving, complete audit trails and compliance with ISO and industry standards must not be treated as an afterthought.
Are European cloud providers a genuine alternative to US hyperscalers?
There is still a prevailing misconception that European cloud providers are technically inferior. In practice, this has long since ceased to be the case. Many providers have invested in scalability, security, high availability and service quality. The key difference between them and US hyperscalers today lies less in the technology than in the legal framework: Providers are subject exclusively to European laws, thereby creating a legally controllable infrastructure. This is precisely what matters for business-critical document and quality management systems.
To avoid creating new dependencies, sovereign cloud strategies rely on open interfaces, standardised APIs and modular architectures. This ensures that the infrastructure remains adaptable in the long term and independent of individual providers.
Data repatriation in practice: an example from the mechanical engineering sector
A specialist machinery manufacturer for the process industry manages test reports, initial sample test reports, supplier qualifications and project-specific quality certificates in its quality management software. The company is ISO 9001-certified and works with customers from the chemical and food industries, whose data is subject to strict contractual confidentiality requirements.
Storing data on a US hyperscaler poses a significant risk. The theoretical possibility of US authorities accessing data under the CLOUD Act is in direct conflict with contractual obligations towards customers. By repatriating the QMS to a sovereign European infrastructure, the company not only gains legal certainty and improved auditability, but also significantly greater control over its most sensitive data.
Conclusion: Digital sovereignty becomes a competitive advantage
Data repatriation is not a step backwards towards on-premises nostalgia. Companies that rely on sovereign European cloud infrastructures today benefit from greater compliance assurance, reduced geopolitical risks and long-term digital sovereignty.
The most important first step remains an honest assessment of one’s own data landscape. By creating transparency, prioritising critical systems and incorporating governance from the outset, companies lay the foundations for a successful and secure data repatriation strategy.
