European Sovereign Clouds vs Hyperscalers in 2026: Compliance, Pricing and Maturity Compared for Public Sector Projects

European public-sector cloud procurement in 2026 is presented as a practical choice shaped chiefly by mandatory sovereignty certifications and workload egress volumes rather than a binary political preference. EU/EEA-controlled providers such as OVHcloud, Scaleway, StackIt, Deutsche Telekom, IONOS, and others offer stronger jurisdictional separation from the US CLOUD Act, while SecNumCloud-qualified services including OVHcloud and Thales-controlled S3NS meet French requirements that US-controlled hyperscalers cannot obtain directly. AWS, Azure, and Google Cloud remain GDPR- and ISO-compliant and lead substantially in global scale, service catalogs, advanced managed data platforms, IAM, and operational maturity, but their EU regions do not alone remove exposure to US legal authority. European providers often offer lower list compute prices and bundled egress, making them attractive for data-intensive workloads, though reduced managed-service breadth can increase internal platform and SRE costs. Hyperscaler sovereign offerings, including AWS European Sovereign Cloud, Microsoft Cloud for Sovereignty, Google’s S3NS, and Delos Cloud, can reduce operational-access risks and preserve familiar tools but retain questions about ultimate parent-company jurisdiction, feature parity, pricing, and lock-in. The recommended approach is to verify certificates and audit evidence directly, evaluate total cost across infrastructure and staffing, require tested resilience and exit provisions, and preserve portability through Kubernetes, S3-compatible storage, standard databases, Terraform or OpenTofu, OpenTelemetry, buyer-controlled infrastructure code, and contractual data-export and zero-switching-fee terms.

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