Cloud adoption across Europe has largely been shaped by convenience.
Hyperscalers offer a smooth developer experience, deeply integrated services, and a low barrier to entry. For many organisations, this has enabled rapid development and faster time to market.
That convenience is real, and for many use cases, it still makes sense.
However, the trade-off is not innovation itself, but how easily organisations can build and operate their environments. European cloud approaches, based on more modular building blocks, often require a more deliberate setup, but can offer greater flexibility in how solutions are designed.
At the same time, this convenience introduces a structural dependency.
Managed services, proprietary tooling, and tightly integrated platforms make development easier, but they can also make it more difficult to move, adapt, or operate independently across environments. In a context where geopolitical dynamics and regulatory pressure are evolving, this dependency becomes an important architectural consideration.
Within Cronos Europa’s Sovereign Tech series, cloud and DevOps represent a critical layer where organisations must balance ease of use with long-term control, while preserving the flexibility to design and evolve their architecture over time.
We spoke with Kilian Niemegeerts from FlowFactor, a sister company within De Cronos Groep, to explore what sovereign cloud means in practice and how organisations can design for both flexibility and autonomy.
Sovereign cloud is often associated with data residency. In practice, it is broader.
It is not only about where data is stored, but also about how systems are operated, which technologies are used, and how dependent an organisation becomes on specific providers.
Sovereignty therefore spans multiple dimensions, from data control and operational autonomy to technology choices and long-term flexibility.
For organisations, the key question is where control is critical and where flexibility can remain. For some, the priority is regulatory compliance. For others, it is operational autonomy. In most cases, it is a combination of both.
Working with a European cloud provider often involves a more deliberate approach compared to pre-integrated hyperscaler environments.
Instead of relying on pre-bundled services, organisations make more explicit architectural choices: what runs where, who manages it, and how components interact.
This approach, often based on open standards, enables greater flexibility and makes it easier to move across environments. At the same time, it requires stronger platform and infrastructure expertise to design and operate these environments effectively.
A practical starting point is an impact analysis. Which services are you running today, how do they translate into a European cloud context, and where does sovereignty actually matter? The goal is not to replace hyperscalers entirely, but to understand where a different approach adds value. A heatmap of applications helps prioritise where sovereign infrastructure makes the most impact.
Cloud-native architectures, when designed deliberately, are inherently portable.
Technologies such as Kubernetes and open source deployment tools allow workloads to run consistently across environments. This makes where workloads run a configuration choice rather than a migration challenge.
DevOps practices reinforce this.
Infrastructure as code and open tooling ensure environments remain reproducible and transferable.
However, this only works when it is intentional.
Organisations that rely heavily on proprietary services may find it more difficult to move across platforms over time. Designing around open standards can increase flexibility and portability, but requires more deliberate architectural choices, as well as stronger platform and infrastructure expertise.
Resilience and portability are not by-products. They are the result of deliberate architectural choices.
One of the most common misconceptions is that storing data in Europe automatically guarantees sovereignty.
In reality, sovereignty is about maintaining the freedom to decide where data and workloads are placed, when they can be moved, and maintaining clear visibility and control over who has access and under which conditions.
Another misconception is that a full migration is required.
Most organisations benefit from a phased approach, starting with the workloads where sovereignty matters most.
Sovereign cloud is also often perceived as more expensive.
In practice, European cloud providers can, in certain scenarios, be more cost-effective than hyperscalers on a like-for-like basis. Even when factoring in platform expertise, total cost often remains competitive, particularly when organisations regain control over infrastructure.
Sovereign cloud is not about rejecting innovation. It is about ensuring that innovation remains aligned with long-term control.
Organisations that take a deliberate approach to architecture, reduce dependency on proprietary services, and build on open standards are better positioned to adapt over time.
