Sovereign across
every cloud.
A railway signal box — a Stellwerk — keeps every train on the right track. Stellwerk does the same for multi-cloud: a sovereignty layer under your governance that routes workloads across every cloud you run — and refuses the routes that break your rules. Self-hosted by default. No phone-home.
The signal box for everything you ship.
Developers describe what they need in one portable workload spec. Stellwerk resolves it per environment, applies it through your existing infrastructure-as-code, and refuses any route that breaks policy — in the open, with the rule that stopped it.
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Self-hosted by default
No managed control plane. Nothing phones home.
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Policy at the boundary
Unsafe routes are refused before they reach a cloud.
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The exit is the architecture
Every resolved dependency stays as portable IaC you own.
Be there when the signal turns green.
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