STACKIT is the cloud platform of Schwarz Group (Lidl, Kaufland) — 100% German sovereignty, BSI C5 certified, KRITIS-ready. We operate your Proxmox cluster on STACKIT for maximum compliance.

The following are trademarks of their respective owners: Proxmox VE (Proxmox Server Solutions GmbH), STACKIT (STACKIT GmbH & Co. KG (Schwarz Gruppe)). WZ-IT is an independent service provider and has no business, partnership, or contractual relationship with these companies. We offer independent migration, installation, hosting, and operations services.
When data sovereignty is non-negotiable and CLOUD Act exposure is a showstopper.
Operated by Schwarz Group. Full German data sovereignty — no CLOUD Act, no FISA, no third-country transfers.
Highest German compliance standards. ISO 27001, BSI C5, KRITIS-suitable. Compatible with regulated industries.
Data centers in Germany (Heilbronn, Lübbenau under construction). Data never leaves German jurisdiction.
BSI cooperation for sovereign cloud solutions in public administration. Suitable for authorities, hospitals, energy providers.
Industries with highest compliance requirements benefit most from sovereignty guarantees.
Federal authorities, state administration, municipalities. Sovereign Proxmox platform with BSI-compliant infrastructure.
Hospitals, medical care centers, insurers. Processing of health data under strictest GDPR requirements.
Banks, savings banks, insurers. BaFin-compliant cloud infrastructure without CLOUD Act exposure.
Energy, water, transport, telecom. Critical infrastructures with highest security and availability requirements.
We handle the complete setup of your Proxmox infrastructure on STACKIT — from architecture through migration to ongoing operations with 99.9% SLA.
Cluster topology for STACKIT
From AWS/Azure or on-prem
Compliance documentation
99.9% SLA, 24/7 monitoring
STACKIT is the cloud platform of Schwarz Group (Lidl, Kaufland) — the largest German hyperscaler initiative. With data centers in Heilbronn (operational) and Lübbenau (under construction, €11B investment), STACKIT targets sovereign cloud solutions for authorities and regulated industries. The BSI has been cooperating with Schwarz Digits since 2025.
Native STACKIT services use OpenStack-based Kubernetes/IaaS. Proxmox on STACKIT additionally provides KVM virtualization with full hardware control, simpler VM management and no vendor lock-in — you can migrate the Proxmox stack to another provider anytime.
Yes, significantly. STACKIT is positioned in the premium segment (comparable to Microsoft Cloud Germany). The premium pays off with compliance requirements that Hetzner does not fulfill: BSI C5, KRITIS, BaFin, government certifications. In consulting we clarify whether STACKIT is economically sensible for you.
Schwarz Digits is the IT subsidiary of Schwarz Group (Lidl, Kaufland) and operates STACKIT as German hyperscaler. Unlike US hyperscalers, Schwarz is not subject to foreign jurisdiction — no CLOUD Act exposure, no FISA requests.
Yes. Since we use Proxmox VE (open standard), your VMs can be migrated to another Proxmox cluster at Hetzner, OVH, IONOS or on-premise anytime. You have no vendor lock-in — that's a central advantage over native cloud services.
STACKIT compute and storage costs come directly from STACKIT — priced in the AWS/Azure range. Our managed service on the Proxmox layer: from €99.90/month (standard SLA). A complete cost framework comes after the architecture workshop.
Whether a specific IT challenge or just an idea – we look forward to the exchange. In a brief conversation, we'll evaluate together if and how your project fits with WZ-IT.
Timo Wevelsiep & Robin Zins
Managing Directors of WZ-IT

