Serverius and Fuzion are now part of Kolo, a Northern European data center platform.

Run AI Workloads Faster, Smarter, and More Sustainably

From low-latency inference across Europe to energy-efficient training in the Nordics, our infrastructure is built for AI at scale

The AI infrastructure challenge

Running AI at scale means more than just GPUs. It’s about deploying the right workload, in the right place, with the right control.

  • Low-latency proximity: Deliver real-time inference and reduce data transit times by hosting workloads near your users, data, and cloud platforms.
  • Hybrid cloud integration: Seamlessly bridge on-premises infrastructure with public clouds, maintaining flexibility for training and inference pipelines.
  • High-density infrastructure
    Support up to 50 kW per rack with liquid- or air-cooling to power large-scale training and inference workloads in a compact footprint.
  • Energy-efficient by design
    Deploy in regions engineered for sustainability—leveraging low PUE, heat reuse, and renewable energy to run AI at scale without excess emissions.
  • Data sovereignty and compliance: Safeguard sensitive models and customer data within GDPR-compliant, EU-owned facilities.
  • Sustainability goals: Minimize environmental impact through the use of renewable energy, heat reuse technology, and ESG-aligned infrastructure.


For a deeper dive on why inference doesn’t belong in the cloud alone, check out our post: AI Inference Doesn’t Belong in the Cloud – Alone.

Keep your data where it belongs.

Keep your data where it belongs, on infrastructure that is fully owned and operated in Europe. Our platform is designed for GDPR compliance and robust data residency, ensuring you maintain full control over sensitive models and customer information.

Balance security and flexibility with private cloud options for sensitive workloads, while taking advantage of the public cloud for scalable, non-sensitive tasks, all within trusted, EU-owned environments.

Protect your models and training data with infrastructure built for confidentiality, integrity, and access control across both inference and training environments.

Solutions for Scalable AI Infrastructure

High-Density Racks

Support up to 50 kW per rack with liquid cooling, designed for training and inference at scale. Achieve ultra-high computational density within a compact footprint.

GPU-as-a-Service

Instantly access GPU infrastructure through trusted partners with pre-configured or custom setups. Scale your AI workloads without upfront capital expenses.

Hybrid Cloud Integration

Enable seamless connectivity between private and public clouds with guaranteed low-latency throughput. Move your workload across environments without disruption.

Choose Your Cooling

Support high-density AI workloads with liquid or air cooling, available across our metro-edge and Nordic training sites.

Low-Cost Power

Located in energy-efficient regions, our sites in Sweden offer renewable power at ultra-competitive rates, striking a balance between performance and sustainability.

Scalable Deployments

Deploy from single racks to entire private suites. Scale horizontally or vertically as your workload evolves.

How it works

Define Your AI Strategy

Align on workload type, latency needs, and data residency, whether you’re running real-time inference, batch training, or both.

Select Optimal Deployment Site

Choose latency-optimized metro locations for inference (e.g., Stockholm, Copenhagen) or low-cost northern Sweden for training.

Procure or Lease Hardware

Deploy your infrastructure, or your HW, through Kolo.

Deploy with High-Density Racks

We support up to 50 kW per rack by default, with both air and liquid cooling options. Higher densities are available on request. Our team takes care of installation, cable management, and ongoing remote hands support.

Use GPU-as-a-Service

We provide GPU-as-a-Service through our trusted partners.

Connect to Cloud or Private Environments

Set up hybrid cloud connectivity with dedicated low-latency links to public or private clouds.

Secure Your Workloads

Ensure full compliance with EU data laws, enable encryption, and apply access control policies.

Operate and Scale

Manage your deployment with live dashboards, automation tools, and 24/7 remote support. Scale easily by adding racks or expanding to multiple regions.

Need more details?

Our AI-edge locations

Where you deploy your infrastructure makes all the difference. We offer five key data center locations designed to match your AI workload needs:

Stockholm

A European startup hub. Features high security, metro-edge connectivity, twin-sites with 100% renewable energy, and heat recovery systems for sustainable workflows.

Copenhagen

A key Nordic gateway offering scalability with a highly connected fiber backbone. Perfect for regional AI deployments. Prepared for liquid cooling and high-density racks.

Amsterdam

Europe’s interconnection hub. Ideal for SaaS and hybrid deployments with low-latency cloud on-ramps.

Piteå

Power-intensive AI workloads thrive here. Benefit from natural cooling, ultra-low power costs, and renewable energy sources. Powered by 100% hydro.

Skanderborg

Proximity to Hamburg, Copenhagen and Aarhus makes this an ideal site for edge inference and low-latency delivery to central Europe. 100% renewable solar power.

Take the next step

Run AI workloads faster, smarter, and more sustainably. View our solution guide for in-depth technical details or book a consultation to discuss your specific needs.