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On-Premise & Hybrid

On-premises infrastructure and local applications for organisations

WZ-IT supplies and operates systems at your organisation, from the compact App Node for open-source applications and the AI Cube to secure connectivity with sites and cloud services.

Local processingCloud/local hybridManaged operationsDesigned for §203 requirements

Companies worldwide trust WZ-IT

Companies worldwide trust WZ-IT

Stadtwerke BrühlDGHO e.V.ABCO Water SystemsGolem.deEVADXBnextGYMAInergyml&sOdiseo SolutionsAnnotaARGESweetConnect GmbH
WZ-IT on-premises products

Two local products for different workloads

The App Node runs open-source business applications on compact hardware. The AI Cube is designed for local AI models, RAG and concurrent inference. Both are preconfigured and operated by WZ-IT.

Open-source applications

WZ-IT App Node

Compact on-site appliance with hardware, applications, setup and ongoing operations in one managed subscription.

from €349 excl. VAT / month · plus one-time provisioning and initial setup

Section 203 managed on premises from €499.90 excl. VAT / month; final scope and price on request.

View App Node
WZ-IT App Node

Local AI

AI Cube

On-premises AI node for local AI chat, private knowledge spaces, RAG and production model inference.

€6,490 excl. VAT one-time · Section 203 scope on request

View AI Cube

Extension for on premises and hybrid

Expose internal web applications through a managed cloud gateway

WZ-IT operates the upstream reverse-proxy layer with domain, TLS, monitoring and a defined connection path to the target system.

from €129.90 excl. VAT / monthongoing managed service
View Cloud Gateway
Service areas

Services for local and hybrid infrastructure

WZ-IT App Node

Open-source applications on compact hardware at your organisation, fully configured and operated under a managed subscription.

Site connectivity and secure access

NetBird, WireGuard and existing identities connect sites, home offices and mobile users through defined access paths.

Hybrid cloud and local systems

Local systems and approved cloud services are connected through defined network, identity and data paths.

Integration and further development

From local AI to custom application integration, WZ-IT develops and integrates beyond standard operations.

Modules

Supported open-source applications

The secured framework can run a range of applications from our open-source portfolio. Resource demand, security requirements, availability and licensing determine which workloads share a node and which remain isolated.

Alternative: managed hosting in the data centre

More supported open-source and self-hosted applications

We can install, integrate and operate these applications on suitable on-premises hardware. Network and access components such as NetBird or WireGuard are designed separately as part of the architecture and are therefore not listed as app modules.

AI & knowledge systems

Network and Security

Databases and Storage

Communication and Collaboration

Local application server

WZ-IT App Node

A compact on-site server for selected open-source applications. Hardware, platform and applications are sized appropriately, preconfigured and then operated by WZ-IT.

Choose storage, access, backup and required applications in the configurator. WZ-IT checks the selection for compatibility and operational boundaries before quoting.

View App Node
WZ-IT App Node - local application appliance
How it works

Local, via VPN or in a controlled hybrid setup

1

The App Node runs at your premises

The agreed applications run on the provided hardware at your organisation. Local users and systems reach them directly over the internal network.

2

Access aligned with your environment

The node can remain entirely internal. External access is implemented through NetBird, WireGuard, an existing VPN or a secured gateway.

3

Data flows are defined

Updates, backups, remote maintenance and connected services are deliberately designed before deployment. Required connections and technical measures are documented.

Why local

Three reasons that make the difference

Control your data flows

Local processing is possible, while external integrations, updates and remote access are configured deliberately and documented.

Open stack and defined exit

Proven open-source components, documented configurations and agreed data exports reduce dependency on the operator.

Designed for §203 requirements

For professional secrecy holders, we design data flows, access and technical measures around the use case and accept the required contributing-person obligation where applicable.

Enquiry

Request on-premises or hybrid infrastructure

Describe the site, applications, data volume and required operating scope. WZ-IT reviews the hardware, architecture and secure network integration.

Which local solution do you need?

Choose the focus and describe the planned workloads.

How should we get back to you?

We usually respond within one business day. Please do not submit credentials.

Frequently asked questions

The system is physically located at your organisation or another site you specify. WZ-IT plans, supplies, connects and operates the agreed environment. For the App Node, hardware is provided as part of the managed subscription.
Grammatically correct is "on-premises"; in the IT industry "on-premise" (short "on-prem") has become standard. Both mean the same: the software runs at your site rather than in someone else's cloud.
Depending on requirements, access uses NetBird, WireGuard, an existing corporate VPN or a secured reverse-proxy gateway. The node does not need an exposed administration interface or necessarily a public IP.
The architecture can be designed for professional secrecy holders. This includes documented data flows, access controls and, where applicable, our written confidentiality obligation as a contributing person. Section 203 and GDPR require separate assessment; legal evaluation of the specific use remains with the controller and its advisers.
No. Local and external systems can be combined deliberately. The target architecture defines which data and functions remain local and which approved external services are accessible.
Reviews

Managed open source with consulting and operations

Customer feedback on open-source selection, implementation, maintenance and long-term operations.

YonjuAnnotaGolem.deARGEStadtwerke BrühlDGHO e.V.ABCO Water SystemsCORGOSRekorderKeymateFührerscheinmacherSolidProof
GermanyNetworking & ProvisioningVPNAutomationOperations

“WZ-IT moved our studio infrastructure from decentralised individual devices to a central platform: every site is securely connected via VPN, new devices are onboarded automatically and an entire site is provisioned from a template, without manual steps on location. What impressed me most is the breadth and depth of their knowledge: Timo and Robin are not a typical IT provider who sets up a server and leaves. The two of them think their way into highly complex infrastructure and software topics, work through every requirement we put in front of them, and build networking, provisioning and operations so that everything fits together in the end. WZ-IT is an excellent partner for complex software, network and architecture projects.”

Steve Kirchner

Steve Kirchner

Managing Director, nextGYM GmbH

Pascal Block
GermanyProxmox & BackupProxmoxBackupDocumentation
“Professional, honest and technically thoroughly sound: WZ-IT set up our Proxmox and backup infrastructure securely and future-proof. The consulting from Timo and Robin was objective and needs-driven, the implementation smooth and the final documentation exemplary. You can tell immediately that business-critical infrastructure is thought through holistically from the outset here and implemented with clear ownership.”

Pascal Block

Project Manager, Stadtwerke Brühl GmbH

Stadtwerke Brühl - municipal energy and infrastructure utility.

Stadtwerke Brühl GmbH
Secure your Proxmox & backup setup
Christoph Mußmann
GermanyInfrastructure ModernizationData SovereigntyGDPRDocumentation
“Communication with WZ-IT was open, friendly and professional from the very beginning. Mr. Wevelsiep and Mr. Zins responded to every one of our questions patiently, promptly and respectfully, and contributed their own suggestions and good ideas on how to modernize our server infrastructure and adapt it even better to our needs. Throughout, WZ-IT consistently kept our need for data sovereignty and GDPR compliance in mind. Even short-notice adjustments and change requests from our side were implemented quickly and patiently and integrated consistently into the overall concept. From planning to the final handover, every step was documented transparently and comprehensively - so if a provider change should ever become necessary, the documentation would let us onboard a successor into our infrastructure very quickly. We are extremely satisfied with WZ-IT and hope to continue working together for a long time.”

Christoph Mußmann

Project Officer, DGHO e.V.

DGHO - German Society for Hematology and Medical Oncology.

DGHO e.V.
Modernize your infrastructure - sovereign
Andrea Pawlowski
GermanyArchitecture ConsultingSovereign Software SelectionOpen Source Strategy
“I got to know Timo and Robin as dedicated and professional partners who make a lot of things possible for their clients that initially seem impossible. I felt very well advised. The services offered have thoroughly convinced me. (translated)”

Andrea Pawlowski

Communications Manager, Golem.de

Golem.de - leading German IT news outlet.

Golem.de
Plan a sovereign open-source stack
H
GermanyLocal AI IntegrationTechnical IntegrationImplementation
“While looking for a partner to integrate a local AI solution, we came across Timo and Robin - and could not have made a better decision. They quickly understood our requirements and solved technical challenges competently and pragmatically. We were particularly impressed by the straightforward collaboration, their high level of expertise and the speed of implementation. We are delighted to have Timo and Robin at our side as reliable business partners and look forward to our next projects together. (translated)”

Henrik Jeche

Head of IT Administration

ml&s - full-service provider for the electronics industry.

ml&s
Integrate a local AI solution
Sonja Aßer
GermanySoftware DevelopmentPHP ModernizationAPI Extension
“With Timo and Robin, you're not only on the safe side technically - you also get the best human support! Whether it's quick help in everyday life or complex IT solutions: the guys from WZ-IT think along with you, act quickly and speak a language you understand. The collaboration is uncomplicated, reliable and always on an equal footing. That makes IT fun - and above all: it works! Big thank you to the team! (translated)”

Sonja Aßer

Data Manager, ARGE

ARGE Neue Medien - master data & digital standards for plumbing and building technology.

ARGE
Modernize your legacy software
Aleksandr Shuliko
UAECloud MigrationAWS ExitProxmox81% Cost Reduction
“I recently worked with Timo and the WZ-IT team, and honestly, it turned out to be one of the best tech decisions I have made for my business. Right from the start, Timo took the time to walk me through every step in a simple and calm way. No matter how many questions I had, he never rushed me. The results speak for themselves. With WZ-IT, we reduced our monthly expenses from $1,300 down to $250. This was a huge win for us.”

Aleksandr Shuliko

CTO, EVA Real Estate

EVA Real Estate - leading real-estate agency in Dubai.

EVA Real Estate
Cut cloud cost - up to −81%
Pascal Hakkers
SwitzerlandManaged ProxmoxClusterMonitoringHigh Availability
“WZ-IT manages our Proxmox cluster reliably and professionally. The team handles continuous monitoring and regular updates for us and responds very quickly to any issues or inquiries. They also configure new nodes, systems, and applications that we need to add to our cluster. With WZ-IT's proactive support, our cluster and the business-critical applications running on it remain stable, and high availability is consistently ensured. We value the professional collaboration and the noticeable relief it brings to our daily operations.”

Pascal Hakkers

Aphy AG

Aphy AG - AI platform for hotel back-office.

Aphy AG
Build a high-availability Proxmox cluster
John Hellmerichs
GermanyProxmox & VirtualizationBackupVPNSecurity
“WZ-IT provided very competent support in implementing our server and virtualization infrastructure. As part of the project, a Proxmox-based virtualization environment was set up along with a virtual machine for our application systems. Additionally, a structured backup concept was implemented. A particular focus was on security: the setup of a VPN tunnel and the clean implementation of encryption and access concepts were professionally executed. The structured consulting as well as the reliable and swift implementation deserve special mention. We are very satisfied with the services provided and are happy to recommend WZ-IT.”

John Hellmerichs

Managing Director, AInergy GmbH

AInergy - consultancy for energy and facility management.

AInergy GmbH
Virtualize with Managed Proxmox
Matthias Zimmermann
GermanyOpen Source ArchitectureImplementationTechnical Consulting
“We have had very good experiences with Mr. Wevelsiep and WZ-IT. The consultation was professional, clearly understandable, and at fair prices. The team not only implemented our requirements but also thought along and proactively. Instead of just processing individual tasks, they provided us with well-founded explanations that strengthened our own understanding. WZ-IT took a lot of pressure off us with their structured approach - that was exactly what we needed and is the reason why we keep coming back. (translated)”

Matthias Zimmermann

Managing Director, Annota GmbH

Annota - healthtech startup with an AI documentation assistant.

Annota
Design an open-source AI architecture
Sebastian Maier
BulgariaSovereign CollaborationOpen Source StackOperationsMaintenance
“Timo and Robin from WZ-IT set up a RocketChat server for us - and I couldn't be more satisfied! From the initial consultation to the final implementation, everything was absolutely professional, efficient, and to my complete satisfaction. I particularly appreciate the clear communication, transparent pricing, and the comprehensive expertise that both bring to the table. Even after the setup, they take care of the maintenance, which frees up my time enormously and allows me to focus on other important areas of my business - with the good feeling that our IT is in the best hands. I can recommend WZ-IT without reservation and look forward to continuing our collaboration! (translated)”

Sebastian Maier

Managing Director, Yonju GmbH

Yonju - business coaching and AI products.

Yonju
Get collaboration fully managed
Gabriel Sanz Señor
SpainProduction DeploymentCI/CDPaaSOperations
“Counting on WZ-IT team was crucial, their expertise and solutions gave us the pace to deploy in production our services, even suggesting and performing improvements over our configuration and setup. We expect to keep counting on them for continuous maintenance of our services and implementation of new solutions.”

Gabriel Sanz Señor

Managing Director, Odiseo Solutions

Odiseo Solutions - software engineering for the space industry.

Odiseo Solutions
Ship your prototype to production
Kai Clauß
GermanyNetBird & KubernetesNetBirdKubernetesConsulting
“WZ-IT supported us professionally with the provisioning and setup of NetBird. Alongside the technical implementation, we also received well-founded advice on connecting our Kubernetes clusters. The recommendations were concrete and directly actionable. The collaboration was consistently reliable, fast and on equal terms. We can recommend WZ-IT without reservation.”

Kai Clauß

Head of Development, SweetConnect GmbH

SweetConnect - cross-manufacturer Industry 4.0 platform for confectionery production.

SweetConnect GmbH
Connect sites and clusters securely
Free intro call

Let's talk about your project - honest and no strings attached

  • Straight with Timo and Robin - no sales team, no pitch
  • An honest take, including when we are not the right fit
  • Concrete next steps for infrastructure, software or AI

No risk: worst case, you leave with a clearer understanding of your project than before.

Timo and Robin, founders of WZ-IT
Jakob Öschlberger
“WZ-IT's advice on our Azure migration was technically sound and completely non-binding right from the intro call - we took away a great deal.”
Jakob ÖschlbergerInno7 GmbH
Contact

Let's Talk About Your Idea

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.

Email
[email protected]
Arrange a callback

Callback

Arrange a callback

Leave your number and we will call back — at the latest on the next business day.

For a longer conversation you can book an appointment instead.

Companies worldwide trust WZ-IT

  • ml&s
  • Rekorder
  • Keymate
  • Führerscheinmacher
  • SolidProof
  • ARGE
  • Boese VA
  • nextGYM
  • SweetConnect GmbH
  • Golem.de
  • Millenium
  • Paritel
  • Yonju
  • EVADXB
  • Mr. Clipart
  • Aphy AG
  • Negosh
  • ABCO Water Systems
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First select the service area that best matches your project.