Data Sovereignty Architecture: Multi-Cloud, Air-Gapped, and EU Regulatory Compliance

The Sovereign Mandate for European Enterprise

European enterprises, critical infrastructure operators, and public sector institutions face unprecedented regulatory scrutiny regarding cloud dependency and extra-territorial data access (e.g., US CLOUD Act). The NIS2 directive mandates direct board-level liability for supply chain cybersecurity risks, while DORA requires strict operational resilience and exit strategies from single-vendor cloud providers.

True sovereignty requires more than selecting an EU data center region from an American hyperscaler; it requires technological independence—the architectural capability to run, inspect, migrate, and maintain your core business software without vendor intervention.

Sovereign Deployment Topologies

KEPLIN is engineered from the ground up for total infrastructural flexibility. Organizations can deploy KEPLIN across three verified topologies:

• Sovereign EU Cloud: Hosted on certified European infrastructure providers (e.g., OVHcloud, Hetzner, Scaleway) with 100% European ownership and jurisdiction.
• Hybrid Multi-Cloud: Core database and sensitive workloads running in private enterprise data centers, with customer-facing frontends distributed via sovereign edge proxies.
• Strict Air-Gapped On-Premises: Complete installation inside isolated private networks (SCADA, defense, or banking enclaves) with zero external internet connectivity.

Zero Telemetry Leakage & Air-Gapped Engineering

Most modern SaaS and low-code platforms (OutSystems, Salesforce, ServiceNow) require continuous telemetry handshakes with vendor motherships to validate licenses, download runtime dependencies, or report usage. If the external link is severed, these platforms degrade or halt.

KEPLIN features an air-gapped operational mode:

• Local cryptographic license verification without external HTTP callbacks.
• Bundled offline container images containing all runtime dependencies, UI libraries, and icon assets.
• Zero analytics beaconing or external diagnostic telemetry.

Cryptographic Protection at Rest, in Transit, and in Memory

Data security within KEPLIN utilizes envelope encryption with customer-managed keys (BYOK). Sensitive field attributes (PII, salary data, commercial margins) are encrypted at the column level using AES-256-GCM before being committed to the database disk, protecting data even against unauthorized database administrator access.

Regulatory Alignment: NIS2, DORA, and GDPR

KEPLIN's architecture directly satisfies key regulatory articles:

• NIS2 Article 21 (Supply Chain Security): Complete transparency of software bills of materials (SBOM) and zero third-party closed-source runtime blobs.
• DORA Chapter II (ICT Risk Management): Proven disaster recovery runbooks, sub-minute Recovery Time Objectives (RTO), and portable containerized workloads.
• GDPR Article 25 & 32 (Privacy by Design): Native field-level encryption, dynamic role-based data masking, and automated data retention purging schedules.