Sovereignty does not depend solely on where data is hosted; it also relies on the jurisdiction of the provider. In other words, data must be hosted in controlled environments and operated by a provider not subject to extraterritorial laws, regardless of where the datacentres are located.
Across this landscape, several European actors offer distinct approaches: developer-oriented PaaS, certified sovereign IaaS, and clouds tailored for sensitive or regulated environments. This article analyses and compares five European platforms, each offering a clear positioning depending on technical and regulatory priorities.
As a result, organisations now have mature options to build and operate their services within a controlled, compliant and sustainable framework, relying on providers operating under a jurisdiction free from extraterritorial constraints.
Key points
- The best sovereign cloud platforms meet two key requirements: controlled data localisation and freedom from extraterritorial legislation.
- The right choice depends on priorities: PaaS automation, IaaS control, sector-specific needs or regulatory constraints.
- European providers offer complementary solutions suited to developers, DevOps teams, CIOs and architects.
- Clever Cloud follows a sovereign, automated and resilient PaaS approach, enhanced by a SecNumCloud zone through its partnership with Cloud Temple.
Context: Understanding the challenges of European sovereign clouds
Choosing a sovereign European cloud ensures that data is hosted in environments where both the location and the applicable jurisdiction are under control. Unlike providers subject to extraterritorial laws that may compel access to data even when stored in Europe, providers operating in jurisdictions not exposed to such legislation ensure stronger protection.
This legal independence, combined with controlled localisation, strengthens regulatory compliance, operational predictability and the security of sensitive data. Added to this are technical requirements such as resilience, transparency, local certifications and automation, allowing teams to deploy and operate their services within a controlled, reliable and durable environment.
The 5 best European cloud providers
1. Clever Cloud: sovereign PaaS, fully automated and end-to-end controlled
Clever Cloud is a European PaaS founded in France. The platform automates hosting, deployment and operational maintenance, while ensuring full control of the stack (from the hypervisor to the runtimes) and operating datacentres in Europe or within environments not subject to extraterritorial laws.
Advantages
- Full sovereignty: European jurisdiction, no exposure to the Cloud Act or FISA, guaranteed reversibility.
- Resilience by design: autoscaling, self-healing, daily backups and built-in disaster recovery.
- Structured security: ISO 27001, ISO 9001, HDS, Zero Trust architecture.
Controlled stack: internal hypervisor and open-source technologies developed by Clever Cloud (Biscuit, Sōzu, Materia). - Multi-runtime support: Node.js, PHP, Docker, .NET, Go, Python…
- SecNumCloud zone through a partnership with Cloud Temple for workloads requiring this level of assurance.
Limitations
- Non-cloud-native applications may require adjustments (stateless architecture, 12-Factor principles).
- No low-level access to the infrastructure, as a deliberate architectural choice.
Why Clever Cloud stands out
Clever Cloud provides a comprehensive sovereign and automated PaaS, whereas most European providers concentrate primarily on IaaS. Its “resilience by design” approach, combined with full control over the stack, makes it well suited for teams looking for automation without compromising sovereignty.
2. Scaleway: 100% European IaaS / Lightweight PaaS
Scaleway operates 10 datacentres located exclusively in Europe (including four in France), compliant with GDPR and positioned outside the reach of extraterritorial laws.
Advantages
- 100% European cloud with 10 datacentres across Europe.
- ISO 27001:2022 and HDS certifications.
- Strong commitment to data localisation and service sovereignty.
- Compute, bare metal and managed Kubernetes services.
Limitations
- Teams retain extensive control over integration and DevOps tooling, which suits organisations building their own platform but requires more assembly than a turnkey PaaS.
- Primarily IaaS-oriented: the PaaS catalogue is more focused than that of PaaS-first providers.
3. OVHcloud: Broad European IaaS Offering
OVHcloud is a major French player in the European cloud ecosystem. Its portfolio covers a wide range of services: compute, storage, Kubernetes, private cloud and solutions for regulated environments.
Advantages
- ISO 27001 and HDS certifications, GDPR compliance.
- Broad IaaS offering: compute, storage, networking and containerisation.
- Strong presence across multiple European countries.
Limitations
- SecNumCloud qualification currently applies to specific services (e.g., VMware on OVHcloud) rather than the entire catalogue.
- Primarily IaaS-first: automation and PaaS abstractions vary by service and require configuration by in-house teams.
- Some managed services require additional configuration effort.
4. IONOS Cloud: European IaaS with Documented Renewable Energy Commitment
IONOS Cloud is a German provider offering infrastructure services and DevOps tools. The company publicly highlights its use of 100% renewable energy for its European datacentres, a key element for many organisations.
Advantages
- Datacentres under European jurisdiction (Germany, Europe), GDPR compliant.
- Official commitment to 100% renewable energy for infrastructure.
- Integrated DevOps tools such as the Data Center Designer for modelling cloud architectures.
- Strong price/performance ratio in several independent benchmarks.
Limitations
- Primarily IaaS-oriented: the PaaS offering is more limited than that of specialised managed platforms.
- Ecosystem and managed services designed primarily for infrastructure and governance needs rather than a developer-first PaaS experience.
5. Cloud Temple: SecNumCloud-Certified Sovereign Cloud (ANSSI)
Cloud Temple is one of the very few French providers certified SecNumCloud. Its platform is designed for the most demanding sovereign requirements: public administrations, operators of vital importance (OIV), essential service operators (OSE) and critical industries.
Advantages
- SecNumCloud certification (ANSSI).
- Strong positioning for sensitive environments: administrations, OIV, OSE.
- Reinforced governance, isolation and security.
Limitations
- Focused on highly secure and qualified sovereign cloud services, mainly targeting critical and regulated environments.
- Less oriented towards general-purpose or developer-first PaaS use cases where European PaaS platforms may offer greater automation.
European cloud providers now offer a coherent technical and regulatory framework for organisations looking to secure their data, maintain control over their dependencies and rely on predictable infrastructures. Combining compliance, transparency and automation, they represent a credible alternative to hyperscalers whose models rely on extraterritorial jurisdictions.
In this landscape, Clever Cloud stands out with a PaaS approach focused on reliability and operational simplicity, full stack control and a SecNumCloud zone enabled through its partnership with Cloud Temple. This allows technical teams to deploy, operate and evolve their services within a sovereign, robust and business-aligned environment.