Your organisation relies on dozens of cloud services. Email in Microsoft 365, CRM in Salesforce, analytics in Google Cloud, file storage in Dropbox. Each of these services processes your data in a specific jurisdiction, under specific legal frameworks, with specific exit conditions. Data sovereignty is the question of who ultimately controls that data — and whether you can move it if you need to.

For European SMBs, this question has moved from theoretical to urgent. The combination of GDPR enforcement, the Schrems II ruling, the EU Data Act, and the Digital Markets Act has created a regulatory environment where knowing where your data lives and how dependent you are on specific vendors is no longer optional. It is a compliance requirement.

What digital sovereignty actually means

Digital sovereignty is broader than data residency. It covers three dimensions:

Data sovereignty — who has legal jurisdiction over your data, and under what conditions can foreign governments or third parties access it. When your data sits on servers in the United States, it is subject to US law, including the CLOUD Act and FISA Section 702, regardless of contractual arrangements.

Technology sovereignty — how dependent you are on specific vendors for critical infrastructure. If your authentication runs through a single identity provider, your backup strategy relies on one cloud vendor, and your communication depends on one platform, you have a concentration risk that goes beyond data protection.

Operational sovereignty — whether you can extract, migrate, and continue operations if a vendor changes terms, raises prices, gets acquired, or becomes unavailable. This is the vendor lock-in dimension that many organisations underestimate until they face it.

Why it matters now

Several regulatory developments have converged to make sovereignty assessment a practical necessity:

Schrems II aftermath. The Court of Justice of the European Union invalidated the Privacy Shield in July 2020, and the replacement EU-US Data Privacy Framework (adopted July 2023) remains under legal scrutiny. Organisations transferring personal data to the US must conduct Transfer Impact Assessments (TIAs) documenting the legal basis for each transfer and the supplementary measures in place.

EU Data Act. Effective September 2025, the Data Act gives users the right to switch cloud providers and prohibits vendors from imposing unreasonable switching costs. It requires cloud services to facilitate data portability in machine-readable formats.

Digital Markets Act. Designating gatekeepers (Alphabet, Amazon, Apple, Meta, Microsoft, ByteDance) and requiring interoperability, the DMA reinforces that organisations should not be locked into ecosystems without alternatives.

GDPR enforcement maturity. Data protection authorities across Europe have moved from guidance to enforcement. The Irish DPC fined Meta 1.2 billion euro in 2023 for systematic transfer violations. Smaller organisations are not exempt from these requirements — they simply face proportional scrutiny.

Three questions every organisation should answer

Before diving into tools and frameworks, every organisation should be able to answer three fundamental sovereignty questions:

1. Where does our data actually live?

Not where you think it lives — where it actually lives. Your email may be hosted in the EU, but the spam filtering service processes it through US-based infrastructure. Your cloud storage may have an EU region selected, but the vendor's AI features may route data through global inference endpoints. Your backup service may replicate to a jurisdiction you did not explicitly choose.

For each service, document: the primary processing country, any sub-processors in other jurisdictions, and whether data is transferred outside the EEA.

2. How dependent are we on specific vendors?

Vendor lock-in assessment should cover several dimensions:

  • Data exportability. Can you export all your data in a standard, machine-readable format? How long would it take? What is the cost?
  • Functionality dependency. If this vendor disappeared tomorrow, do alternatives exist that could replace it within a reasonable timeframe?
  • Integration depth. How many other systems depend on this vendor's APIs, authentication, or data formats?
  • Contractual lock-in. What are the notice periods, early termination penalties, and data retention obligations after cancellation?

3. Are cross-border transfers properly safeguarded?

For every data transfer outside the EEA, you need to document:

  • The legal basis (adequacy decision, Standard Contractual Clauses, Binding Corporate Rules, or a derogation)
  • A Transfer Impact Assessment evaluating the legal framework in the destination country
  • Any supplementary measures (encryption, pseudonymisation, contractual commitments)

EU adequacy decisions — the simple path

The simplest legal basis for international transfers is an adequacy decision from the European Commission. These decisions recognise that a third country provides a level of data protection essentially equivalent to the EU.

As of early 2026, adequacy decisions cover: Andorra, Argentina, Canada (commercial organisations under PIPEDA), Faroe Islands, Guernsey, Israel, Isle of Man, Japan, Jersey, New Zealand, Republic of Korea, Switzerland, the United Kingdom, Uruguay, and the United States (under the EU-US Data Privacy Framework, limited to certified organisations).

If your service provider is in one of these countries and operates under the relevant framework, transfers are permitted without additional safeguards. For all other countries, Standard Contractual Clauses and a TIA are required.

Vendor lock-in as a sovereignty risk

Vendor lock-in is often discussed as a commercial risk — switching costs, price increases, unfavourable contract renewals. But it is also a sovereignty and compliance risk.

If you cannot export your data from a vendor, you cannot exercise your rights under GDPR Article 20 (data portability) on behalf of your data subjects. If your vendor is acquired by a company in a jurisdiction without an adequacy decision, your transfer basis may evaporate overnight. If your vendor changes its sub-processor list to include entities in problematic jurisdictions, you may need to object under your DPA — and have an exit plan ready if the objection fails.

The EU Data Act reinforces this: cloud service providers must offer data export in commonly used formats, at reasonable cost, with reasonable notice periods. But the obligation is on you to verify that your vendors actually comply — and to have tested the export process before you need it under pressure.

Practical steps for sovereignty assessment

Step 1: Inventory all services by country. For each data service in your organisation, document where the data is primarily processed and stored. Include sub-processors and their jurisdictions.

Step 2: Assess vendor dependencies. For each service, evaluate data exportability, the availability of alternatives, integration depth, and contractual exit conditions. Rate the lock-in risk.

Step 3: Document transfer safeguards. For every cross-border transfer, record the legal basis, conduct or update the Transfer Impact Assessment, and note any supplementary measures.

Step 4: Plan exit strategies. For critical services, document a migration plan. What format can data be exported in? How long would migration take? What is the cost? Test the export process at least annually.

Step 5: Review regularly. Adequacy decisions can be challenged. Vendor sub-processor lists change. New regulations take effect. Make sovereignty assessment part of your annual data protection review.

How Readmodel® helps

Readmodel® provides the tools to execute each of these steps systematically:

  • Country tracking — every data service records its processing country, making it straightforward to identify all non-EEA processing at a glance.
  • Vendor lock-in assessment — the resilience module evaluates data exportability, vendor dependency, and exit readiness for each service.
  • Transfer Impact Assessment documentation — for every data transfer, you can document the transfer type, legal mechanism (SCCs, adequacy, BCRs), and supplementary measures.
  • Sovereignty overview — the dashboard surfaces geographic distribution of your services and highlights concentration risks.
  • ROPA integration — all transfer documentation feeds directly into your Record of Processing Activities, ready for supervisory authority requests.

Data sovereignty is not a one-time project. It is an ongoing operational discipline — understanding where your data is, who controls it, and what happens when circumstances change. The organisations that treat it as such will find compliance less burdensome and their digital infrastructure more resilient.