Our Open-Source IT Stack

Complete, integrated IT infrastructure built on modern open technologies: secure, scalable, and cloud-compatible.

Modular Architecture, Enterprise Capabilities

Our infrastructure stack combines Univention, Keycloak, OPNSense, Mailcow, Proxmox, Elastic Stack, and GitLab — delivering seamless integration, security, and control. Whether on-prem or hybrid cloud, our solution is designed for long-term autonomy.

IT Stack Architecture Diagram

From identity management and email hosting to network security, container orchestration, and cloud federation — our platform is fully auditable, extendable, and supported by enterprise best practices.

  • Univention UCS + Keycloak for unified identity and SSO
  • OPNSense firewall, VPN, and intrusion protection
  • Mailcow + PMG with OAuth2 and anti-spam protection
  • Proxmox HA cluster with isolated containers & VMs
  • Elastic Stack dashboards for logs and metrics
  • GitLab CI/CD for automated, secure deployments

Secure by default. Scalable by design. Open by principle.

Dashboard Example

Hybrid-Cloud Ready & Microsoft Compatible

We bridge open-source with Microsoft 365 using secure SAML and OAuth2 integrations. Our customers can retain full control while enjoying native compatibility with Azure AD, OneDrive, and SharePoint.

  • SAML federation with Azure AD and Microsoft 365
  • Same credentials across cloud and on-prem services
  • Keycloak realms for external and internal clients
  • Dynamic configuration with HAProxy Data Plane API

Run your infrastructure your way — without compromise.

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