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EU flagEU-sovereign infrastructure

Next generation
network security.
Breach-resistant by design.

Zero Trust architecture. Simple to operate. On hardware you own, under EU law.

Data jurisdiction
Sweden & Germany
Vendor lock-in
Zero
Technology stack
100% open source
Data residency
EU only
Ownership model
You own it entirely
GDPR compliant by design
No US-owned infrastructure
Fully auditable open source stack
Deployed on customer-owned hardware
Full handover — no ongoing dependency
Why it matters

Trust what you can verify.

Adequacy decisions change. Vendor lock-in compounds. Extraterritorial surveillance is real. Organisations that build on open, sovereign infrastructure today aren't taking a risk — they're eliminating one.

Read our full approach

Verifiable by design

Every component is open source. Inspect the code. Audit the behaviour. Know what runs your data.

Infrastructure you own

Deploy on your own servers. EU data residency doesn't have to mean someone else's cloud.

No lock-in, ever

We design, build, and document — then hand it over. Take it anywhere, without asking our permission.

Built for compliance

Regulated industries and public sector deserve infrastructure built for data sovereignty from the start.

What we deliver

Project-based.
Results you keep.

We scope the work, deliver it, and make sure your team can own it from day one. No ongoing dependency.

01

Zero Trust Network Access

Replace legacy VPNs with ZTNA — identity-aware, least-privilege access across every endpoint and site. Works on any device, in any location.

NetBird OPNsense WireGuard
02

Infrastructure migration

Move off proprietary hypervisors, US-owned SaaS, and black-box platforms to auditable, open source alternatives you control.

Proxmox Ceph OpenTofu
03

Identity & access management

Self-hosted SSO, MFA, and directory services. No third-party holds your identity data — you do.

Kanidm Keycloak LDAP
04

Backup, HA & resilience

High-availability clusters, automated backups with tested restores, and disaster recovery that works when you need it.

Proxmox HA PBS Ansible
05

Security monitoring & SIEM

Log aggregation, threat detection, and incident response infrastructure — deployed in your environment, owned by you.

Wazuh Graylog OpenSearch
06

Automation & IaC

Infrastructure as code from day one. Repeatable, version-controlled deployments your team can evolve without us.

Terraform OpenTofu Ansible
How it works

Structured delivery.
Clean handover.

Every engagement follows the same proven process — from scoping to documentation to knowledge transfer.

01

Discovery

We map your current stack, understand compliance requirements, and define what sovereign actually means for your organisation.

02

Design

Architecture diagrams, technology selection, and a delivery plan scoped to your environment. No surprises.

03

Implementation

We deploy using automation and infrastructure-as-code from day one — so the result is reproducible and testable.

04

Handover

Full documentation, runbooks, and knowledge transfer to your team. You leave owning, operating, and extending the stack independently.

Hybrid environments

Not every engagement starts on a greenfield.

Legacy systems carry real business value. We know how to work with them — and when the time is right, how to move past them at a pace that makes sense for your business.

VMware, Hyper-V, and Windows Server — deep hands-on experience
Microsoft Entra ID, M365, and Azure DevOps integration
Fortigate and Ubiquiti network infrastructure
Phased migrations that put business continuity first
Our belief

Open infrastructure is the only infrastructure worth trusting.

Closed systems ask you to take their word for it. Open systems let you verify. For data that matters, that difference is everything.

Inspect every line of code running your infrastructure
Move providers — or take it fully in-house — at any time
No licensing fees, no usage-based pricing surprises
Backed by a global community, not a single vendor's roadmap
Read our approach
FAQ

Straight answers.

Do we need to own our own servers?

Not necessarily. We can deploy on your hardware, at a colocation facility, or on EU-based sovereign cloud providers. What matters is that you control where the data lives and who has access.

What happens when the project ends?

You get full documentation, infrastructure-as-code, and a knowledge transfer session. The stack is yours to run, modify, or migrate — no ongoing dependency on Tallberga.

Is open source actually secure?

Open source code is auditable by anyone — including you. Most enterprise security tooling runs on open source foundations. Transparency is a security property, not a liability.

How long does a typical engagement take?

Scope varies widely. A focused ZTNA rollout might be 4–6 weeks. A full infrastructure migration could be several months. We scope carefully upfront so there are no surprises.

Do you offer ongoing support?

We specialise in project delivery and handover. If ongoing support is needed, we can discuss options — but we always design for your team to operate independently.

Which countries do you operate in?

We work with organisations across the EU. Our team is based in Sweden, and we regularly work with clients in Germany, the Nordics, and other EU member states.

Contact

Let's talk about your infrastructure.

No sales pitch. Just a straight conversation about where you are and where you want to be.

hello@tallberga.se
Sweden & Germany
NDA available on request