Sovereignty Strategy & Cloud Advisory: Navigating Your Journey to STACKIT

Why sovereignty is a strategy, not a feature

Many organisations treat data sovereignty as a compliance checkbox. That is a mistake. Sovereignty is a strategic decision with profound consequences for provider selection, IT architecture, contract design and competitive positioning.

The core question is not: “Are we GDPR-compliant?” The core question is: “Who has access to our data in an emergency — and can we control that?”

The CLOUD Act: A concrete risk for Regulated Industries

The US CLOUD Act (Clarifying Lawful Overseas Use of Data Act, 2018) empowers US authorities to demand access to data from US companies — regardless of where that data is physically stored.

The Reality: Even if your data sits in a data centre in Frankfurt, a US provider may be legally obliged to hand that data to US authorities.

For organisations in highly regulated sectors this is not a theoretical risk but a concrete compliance and operational bottleneck:

• Automotive: TISAX requirements
• Banking & Finance: BAIT / DORA compliance
• Healthcare: KHZG regulations
• Critical Infrastructure: KRITIS / NIS-2 directives

STACKIT: The Sovereign Cloud Alternative

STACKIT (the digital brand of Schwarz Digits, the IT powerhouse of the Schwarz Group) offers a distinct alternative to non-European hyperscalers. It is designed to completely eliminate third-country access risks.

Key Sovereignty Characteristics

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Characteristic	Significance
German company	No US Cloud Act risk — no obligation to disclose to US authorities
Data centres in Germany & Austria	GDPR-native data residency, Art. 44 GDPR not a concern
Open standards	Built on OpenStack, Kubernetes, Terraform — zero proprietary vendor lock-in
Contractual guarantees	DPA per GDPR Art. 28, transparent data processing agreements, and a dedicated Data Protection Cockpit
BSI C5 attestation	Demonstrated high-level security controls under the premier German standard

The Four Pillars of STACKIT Sovereignty

1. Legal Sovereignty: Data is stored and processed exclusively under European jurisdiction, shielded from extraterritorial laws.
2. Technological Freedom: Open-source architectures ensure maximum transparency, code auditability, and effortless interoperability.
3. Organizational Independence: Migration patterns and exit strategies are designed so you always retain absolute control over your operational data.
4. Economic Stability: Backed by the financial strength of the Schwarz Group, ensuring long-term operational viability free from volatile market shifts.

Our 4-Phase Cloud Advisory Journey

Transitioning to a sovereign cloud requires a structured roadmap. We guide your organization from initial assessment to fully compliant, continuous operations on STACKIT.

Phase 1: Sovereignty & Readiness Assessment

We audit your current IT landscape to identify third-party dependencies, map shadow IT, and classify your existing workloads based on regulatory and organizational needs.

Phase 2: Strategic Architecture Design

We design hybrid or multi-cloud target architectures using open-source standards. This includes setting up secure zones, planning exit strategies, and ensuring complete interoperability.

Phase 3: Migration & Compliance Integration

We align STACKIT’s native security controls with your specific regulatory frameworks (BSI IT-Grundschutz, ISO 27001, GDPR). We then execute migration playbooks, beginning with low-risk pilots before moving core systems.

Phase 4: Continuous Governance & AI Evolution

We establish sovereign GRC (Governance, Risk, Compliance) automation and lay the groundwork for adopting secure, sovereign AI models hosted entirely within STACKIT’s secure infrastructure.

Our Methodology: Three-Tier Workload Classification

Not all workloads have the same sovereignty requirements. To avoid over-engineering or unnecessary costs, we classify your applications into three distinct tiers:

Tier 1: Sovereignty-mandatory

Criteria: Regulatory or contractual obligation for local data storage and processing; data that creates severe liability risks if accessed by foreign authorities; sensitive personal data (Art. 9 GDPR).

Examples: Core customer data, health records, financial transactions, TISAX-classified development files, and KRITIS control systems.

Requirement: Exclusively STACKIT (or equivalent sovereign cloud). No deployment on US hyperscalers.

Tier 2: Sovereignty-preferred

Criteria: No hard regulatory veto, but elevated protection needs. Data that would cause reputational damage or competitive disadvantage if compromised.

Examples: ERP systems, HR databases (without special categories of personal data), internal communication platforms, and proprietary product designs.

Requirement: STACKIT preferred; other secure European providers acceptable. US hyperscalers are not recommended.

Tier 3: Flexible

Criteria: No personal data, non-sensitive operational data, or public-facing assets where speed and global reach outweigh strict sovereignty.

Examples: Public websites, CDN content, open-source build artifacts, and isolated development sandboxes.

Requirement: Any cloud provider is acceptable.

The Sovereignty Decision Tree

To determine where your workloads belong, we guide you through five core questions:

Practical steps

Securing your digital sovereignty is an active process. We work alongside your teams to execute these immediate, practical steps:

1. Step 1: Create workload inventory — Build a comprehensive directory of all applications and their respective data categories
2. Step 2: Sovereignty workshop — Bring together CISO, DPO and legal department to complete the three-tier classification
3. Step 3: Establish the sovereignty matrix — Set up a living, audited document that assigns clear ownership and hosting rules for every workload
4. Step 4: Appoint a Data Sovereignty Officer — Define clear accountability and sovereignty governance for cloud operations
5. Step 5: Contractual safeguarding — Finalize DPAs with STACKIT, configure the Data Protection Cockpit to match your security baseline.