Web App Hosting in 2026: EU Sovereign (OVH/Scaleway) vs AWS Compared

The verdict in three sentences

For an SMB business application, OVHcloud and Scaleway cover 90 % of needs at 2 to 3 times lower cost than AWS for an equivalent workload, while guaranteeing GDPR-compliant European hosting. AWS stays relevant for global-scale needs or advanced managed services, but its egress fees and lock-in inflate the real bill. For sensitive data (health, public sector), the SecNumCloud label and HDS hosting become deal-breakers, not options.

What each platform really costs

An instance's sticker price hides the truth: add storage, outbound bandwidth and managed services. Here is a 2026 order of magnitude for three workload profiles of a business web app (database + API + front end).

The line that shocks most IT directors is egress: an app serving 2 TB per month pays 0 EUR on OVH but ~180 USD on AWS in outbound fees alone. Over a year, the gap often exceeds the total cost of the European server.

Sovereignty and compliance: the deciding criteria

Beyond price, the choice turns on the legal location of data and certifications. A European host escapes the US Cloud Act, which reassures regulated sectors.

For health data, HDS hosting is a legal obligation, not a comfort. For a public tender or a critical infrastructure operator, SecNumCloud often shuts out non-qualified hyperscalers. Conversely, if your app targets a global audience with managed AI services, the AWS ecosystem keeps a functional edge.

Mini case study

Sophie, IT director of a telemedicine SMB in Nantes, hosts an app processing health data for 12,000 patients. On AWS eu-west-3, her monthly bill hit 380 EUR (instances + database + 3 TB egress). Migrating to an HDS-certified OVHcloud offer, she dropped to 145 EUR/month, saving 235 EUR/month (2,820 EUR/year). Above all, she secured HDS compliance and removed the Cloud Act legal risk. The migration cost, estimated at 6,000 EUR, paid off in 26 months while lifting a major sales barrier with her hospital clients.

FAQ

Does GDPR ban using AWS? No, the AWS Paris region is technically GDPR-compliant. The legal risk stems from the Cloud Act: a US entity could theoretically be compelled to hand over data. For sensitive data, a European host removes that doubt.

What are egress fees and why do they matter? It is the charge per gigabyte of data leaving the cloud, ~0.09 USD/GB on AWS. An app serving 5 TB/month pays about 450 USD/month in egress, whereas OVH and Scaleway often include it. For video or export flows, the gap is huge.

Is SecNumCloud mandatory for my app? Only if you process sensitive state data, critical-operator data, or answer certain public tenders. For a typical SMB it is not required, but it is a strong sales argument.

Can I switch host easily later? Yes if the architecture stays standard (Docker containers, PostgreSQL, S3-compatible storage). The trap is proprietary managed services that create lock-in: the more you use them, the costlier reversibility becomes.

What budget for hosting an SMB business app in 2026? Expect 15 to 100 EUR/month with a European host for most uses, plus the managed database. Add backups, monitoring and an SSL certificate. A budget of 50 to 150 EUR/month comfortably covers a robust production application.

Let's scope your project. Tell us the app type, data volume and compliance constraints (HDS, SecNumCloud, GDPR): we design the optimal hosting architecture with an indicative budget. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.