What is the Sovereign Cloud Stack?

The Sovereign Cloud Stack (SCS) is Europe’s open cloud reference architecture. Initiated in 2019 by the OSBA, supported by the BMWK, and since 01/01/2025 maintained by the Forum SCS Standards. In March 2026, the IT Planning Council made the SCS standards binding for the Germany Stack. Yorizon is one of the 14 founding members of the forum.

Why not a proprietary hypervisor?

We run KVM and OpenStack Nova. Vendor licenses can be renegotiated, made more expensive, or withdrawn - open-source code cannot. If a provider is acquired or makes a strategic U-turn, your cloud infrastructure still stands. That is the hard difference between license law and control rights.

Do we need open-source experts on the team?

No. Yorizon operates the stack fully managed. You use standard APIs (OpenStack, Kubernetes, S3), Terraform providers, and standard CLIs — as if it were a classic cloud service. We maintain, harden, and upgrade the OSS stack.

How does this prevent vendor lock-in?

Open standards mean portability. Your workloads run on Yorizon, on STACKIT, on plusserver, on any SCS-compliant cloud — without a rebuild. Same APIs, same images, same Terraform modules. Switching is a migration, not an architecture project.

What does Made in Germany mean technically?

German legal entity (a HOCHTIEF subsidiary), no US corporate group, no access under the Cloud Act, EU-only data residency, timber-built data centers powered by renewable energy. Hardware supply chain from the EU. Operations in Germany — no personnel from third countries with platform access.