The verdict in three sentences
For a business app hosting personal or sensitive data, the sovereign French cloud (OVH, Scaleway) is the default choice in 2026: native GDPR compliance, protection against the US Cloud Act and predictable pricing of 100 to 800 EUR/month. US hyperscalers (AWS, Azure) offer richer services and superior scalability but expose you to legal risk and variable billing that's hard to control. The 2026 rule: sovereign by default, hyperscaler by justified exception.
Cost and compliance comparison 2026
The choice plays out on four axes: cost, compliance, performance and reversibility. Here is the figures-based comparison for a mid-sized business app.
| Criterion | OVH / Scaleway (FR) | AWS / Azure (US) |
|---|---|---|
| Typical monthly cost | 100 - 800 EUR/month | 150 - 2,000+ EUR/month (variable) |
| Bill predictability | High (flat plans) | Low (pay-as-you-go) |
| GDPR compliance | Native, data in France | Complex, clauses to check |
| Cloud Act exposure | None | Yes (US law) |
| Service catalogue | Good | Very broad |
| France latency | Excellent (< 10 ms) | Good (EU region) |
| Reversibility | Facilitated | High exit cost |
The US cloud shines for its catalogue breadth (AI, big data, managed services). But for 80 % of B2B business apps, a French VPS or managed cloud covers the need at lower cost and with no risk of data transfer outside the EU.
The Cloud Act and GDPR stakes
The US Cloud Act lets US authorities demand access to data held by an American company, even when stored in Europe. It's a major point of vigilance for sensitive data.
| Data type | 2026 recommendation | US cloud risk |
|---|---|---|
| Health data | Sovereign (HDS mandatory) | Non-compliant |
| HR / payroll data | Sovereign recommended | High |
| B2B customer data | Sovereign recommended | Medium |
| Public / marketing data | US cloud acceptable | Low |
| Trade secrets | Sovereign imperative | High |
For health data, HDS (Health Data Host) certification is a legal obligation in France: OVH and Scaleway are certified, which simplifies compliance. These recommendations are a 2026 framework to validate with your DPO.
Mini case study
Celine, CFO of an industrial SME in Lyon, is deciding how to host a customer-management app containing sensitive B2B data. AWS quote: about 950 EUR/month with pay-as-you-go billing that's hard to forecast, plus Cloud Act exposure. Scaleway quote: flat 320 EUR/month, data in France, native GDPR. Saving: 630 EUR/month, i.e. 7,560 EUR/year, with no legal risk. Over 5 years, the cumulative gap reaches 37,800 EUR in favour of sovereign, while simplifying the annual compliance audit.
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FAQ
Is the sovereign French cloud less performant than hyperscalers?
No, for most business apps. OVH and Scaleway offer excellent latency in France (< 10 ms) and solid availability. Hyperscalers only pull ahead for very specific needs (large-scale AI, advanced managed services).
What is the Cloud Act and why care?
It's a US law letting American authorities access data held by a US company, even stored in Europe. For sensitive data, this creates a compliance risk that the sovereign cloud eliminates.
How much does hosting a business app cost in 2026?
Between 100 and 800 EUR/month at OVH or Scaleway for a mid-sized B2B app, on a predictable plan. With hyperscalers, pay-as-you-go billing can exceed 2,000 EUR/month and stays volatile.
Am I required to host health data in France?
Yes. HDS certification is a legal obligation for health data in France. OVH and Scaleway are HDS-certified, ensuring compliance without complex arrangements.
Can I switch hosting providers easily?
If your app is containerised and free of proprietary lock-in, reversibility is straightforward. Beware of hyperscaler-specific managed services that create a high exit cost.
Let's scope your project. Tell us the nature of your data and compliance constraints: we recommend and price the optimal hosting (sovereign or hybrid). Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
