European Sovereign Cloud Consulting and Migration Services

STX Next helps regulated European companies migrate to sovereign cloud environments that keep data under EU jurisdiction, cut hyperscaler dependency, and pass regulatory scrutiny. We’re ISO 27001 certified.

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Not a region setting, a jurisdiction decision

Selecting an EU region on a US hyperscaler does not remove US legal exposure. We assess where your workloads actually sit, then design and migrate to a platform whose ownership, contract and key control hold up to regulatory review.

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1. Cloud Strategy & Consulting

An architect-led engagement that assesses your current cloud environment and produces a prioritized strategy for how to get more value from your cloud investment. Covers what to optimize, migrate, rebuild, or keep as is.

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A concrete architecture roadmap with prioritized initiatives and expected business impact.
Honest assessment of whether cloud is the right answer for each workload, including recommendations to keep certain workloads on-premises.
All technological and implementation decisions are driven by business realities, not tool preferences.

2. Cloud-Native Application Development

Design and development of applications built around cloud services as first-class components: serverless compute, managed data services, event-driven architectures, and PaaS offerings. Covers the full lifecycle from architecture through deployment. AWS, Azure, or GCP.

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Applications designed to maximize the value of cloud environments – autoscaling, managed services, pay-for-usage – rather than replicating on-premises architecture in the cloud.
Faster time to market through cloud-native deployment patterns and CI/CD.
Lower long-term maintenance cost compared to self-managed IaaS infrastructure.

3. Cloud Cost Optimization & FinOps

A four-phase engagement that combines infrastructure changes with governance to deliver measurable, sustained cost reductions. 15–30% cost reductions are typically achieved within 90 days, with a return on investment in approximately 45 days.

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Step 1: Discovery & Architecture Assessment (Weeks 1–2) Your current cloud environment gets a full read to identify cost drivers, performance issues, security gaps, and the fast-win opportunities.
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Step 2: Strategy & Roadmap (Weeks 2–3) A prioritized roadmap with timelines, resource requirements, and expected business impact for each initiative.
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Step 3: Infrastructure Optimization & Build (Weeks 3–10, depending on scope) The agreed changes get implemented: rightsizing compute, restructuring reserved instances, migrating to PaaS services, deploying infrastructure as code, setting up CI/CD pipelines, configuring monitoring and observability.
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Step 4: FinOps Governance Rollout (Weeks 7–10) Cost visibility embedded in your engineering culture.
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Step 5: Handoff & Sustained Monitoring (Ongoing) Documentation, runbooks, and trained internal ownership. Monthly reviews and cost optimization sprints available as a continuous service.

4. Intelligent Contact Center

Design and implementation of cloud-based contact center infrastructure on Amazon Connect, replacing on-premise call center hardware. Integrates AI agents for routine queries, real-time AI guidance for human support agents, and multichannel support (voice, chat, email). Includes custom AI development for call routing, sentiment analysis, and agent onboarding acceleration.

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Contact center scales with demand rather than running at fixed capacity cost.
AI agents handle routine queries autonomously; human agents handle complex cases with real-time AI assistance.
Omnichannel operation from a single platform: voice, chat, and email unified.
Reduced average handling time and improved first-call resolution, directly improving customer satisfaction.

5. Cloud Migration

End-to-end migration of workloads from on-premises infrastructure or legacy cloud environments to modern cloud platforms. Covers provider selection, architecture design, migration execution, and post-migration validation. Infrastructure as Code is used from day one, and migrations are sequenced to protect production systems.

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Zero-disruption migration: parallel environments, site-to-site VPN for hybrid phases, and rollback procedures validated before any production cutover.
Provider selection is based on performance, cost, compliance, and integration fit — not default preference.
Full post-migration validation against pre-migration baselines.

6. DevOps & Observability

Implementation and operation of CI/CD pipelines, infrastructure as code (Terraform, OpenTofu, Pulumi, AWS CloudFormation), containerization (Docker, Kubernetes), and automated deployment workflows across AWS, Azure, and GCP. Covers the full application lifecycle from repository management through deployment and long-term maintenance.

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Deployments become routine with reduced manual effort, lower release risk, and faster iteration cycles.
Infrastructure defined as code means every environment is consistent, reproducible, and auditable.
Automated pipelines reduce time-to-market and help to allocate engineers' time more effectively.

7. Cloud Infrastructure & Architecture Design

Thorough reviews of existing cloud architecture and design of new cloud infrastructure – covering network topology, multi-region deployments, fault-tolerant microservices, storage configuration, security controls, and disaster recovery.

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Infrastructure built for resilience, cost-efficiency, and long-term maintainability.
Multi-region configurations and fault-tolerant architectures that support high-availability requirements.
Security and compliance embedded at the architecture level to reduce operational risk.

8. Sovereign Cloud Solutions

Design and migration of cloud environments built entirely under EU jurisdiction, using sovereign platforms such as StackIt and CloudFerro. Includes a compliance and data sovereignty audit, sovereign cloud architecture blueprint, secure build and migration, and full operational handoff with compliance documentation.

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True legal compliance under EU – no CLOUD Act exposure, no jurisdictional grey zones.
Full audit readiness with governance documentation and data control.
German-language contracts, billing, and support aligned with German business law.
Open up innovation projects (AI, data platforms, Industry 4.0) that were previously blocked by compliance uncertainty.

9. Cloud Center of Excellence

An all-inclusive service package for organizations looking to build internal cloud maturity and governance at scale. Establishes the structures, roles, standards, and practices that allow cloud environments to scale seamlessly and cost-effectively. Covers multi-cloud coordination, FinOps governance, security standards, and accountability frameworks. Includes add-on services: Cloud Platform Engineering, 24/7 Support, and Cloud Architecture Consulting.

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Reduces the need for multiple specialized roles by providing integrated cloud governance capability.
Seamless coordination across multiple cloud providers.
Cloud maturity developed internally – you own your governance instead of depending on an external partner.

10. Hybrid Cloud & Multi-Cloud Architecture

Design and implementation of architectures that span multiple cloud providers (AWS, Azure, GCP) and on-premises systems. Covers cross-cloud integration, unified cost management, centralized observability, and governance frameworks that work across provider boundaries.

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Avoids lock-in to a single cloud provider's pricing, service availability, and roadmap.
Different workloads run on the provider best suited for them, rather than forcing every workload onto one platform.
Unified governance, cost visibility, and security posture across providers.

Full migration lifecycle

Assessment, architecture, execution and handover, run by one squad from the first audit through post-go-live support.

“Many executives believe that if they select the 'Frankfurt' region on a US hyper-scaler, they have solved their sovereignty issues. They haven't.”

Anna Burzyńska

Head of Cloud at STX Next

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Migration assessment and roadmap

We assess your current infrastructure against your data residency requirements and produce a migration roadmap with platform recommendations, risk ratings, and a sequenced workload plan. Delivered in 2 weeks, before any architecture work begins.

Sovereign platform architecture

We design and build your sovereign cloud environment on the platform that fits your compliance profile, most often CloudFerro, STACKIT, AWS EU Sovereign, or Microsoft Sovereign Cloud. Infrastructure-as-code throughout, Kubernetes, documented security controls. Every design decision is auditable.

Migration execution and cutover

A dedicated squad, typically a Lead Cloud Architect, Cloud/DevOps engineers, and a Project Manager, manages the full migration: workload transfer, pipeline adaptation, CI/CD configuration, cutover planning, and post-migration stabilization. The team stays through go-live, then moves into a one-month hypercare period to hand off to your internal ops team.

Governance, monitoring and optimization

We configure monitoring, access auditing, and cost controls, then deliver operator runbooks and training so your team can manage the environment independently, or with light-touch support from us if you'd rather we stay close.

What problems does sovereign cloud solve?

Most organizations arrive at sovereign cloud through one of four situations: a regulatory audit, a lost deal, a legal review, or a blocked project.

Your cloud provider is subject to U.S. law, regardless of where your data sits

Our solution

Hosting data in an AWS Frankfurt or Azure West Europe region does not place it beyond U.S. jurisdiction. Both are U.S. incorporated companies and can be compelled to disclose data held anywhere in the world under the CLOUD Act. For organizations in defence-adjacent sectors, financial services, or public-sector supply chains, that exposure is a material risk. Sovereign cloud providers incorporated and operating exclusively under EU law close that gap in a way that hyperscaler "sovereign regions" structurally cannot.

EU-region hosting no longer satisfies the regulations you are subject to

Our solution

GDPR established data residency as a baseline. NIS2, DORA, and the EU AI Act are shifting focus from where data is stored to who controls it and under what legal framework. For organizations in scope, the question is no longer whether your cloud environment is compliant in principle. It is whether you can demonstrate that to a regulator who will ask.

Your enterprise customers are making it a contract requirement

Our solution

Regulated buyers in financial services, healthcare, and public administration are including cloud jurisdiction requirements in procurement terms. If you cannot demonstrate EU-sovereign infrastructure, you are losing deals to competitors who can, and you may not always know that is the reason.

Compliance uncertainty is blocking projects that should already be running

Our solution

AI initiatives, data platform builds, and analytics environments are stalled because legal or security teams cannot sign off on processing sensitive data in the current cloud environment. Sovereign cloud resolves the uncertainty and unblocks a queue of projects, not just the migration itself.

Infrastructure delivery across regulated sectors

We've migrated banking, government-adjacent, and critical infrastructure workloads from legacy and on-premise setups into compliant, scalable cloud environments.

Discover more case studies

Switzerland

Scalable, Compliant Cloud for Regulated Industries

STX Next migrated Squirro's banking and government clients from traditional VMs to Kubernetes on AWS. Regulated customers now run on infrastructure built for their compliance needs, scalable without re-architecting.

Banking & Government

Banking

Ireland

From Manual Builds to Auditable Microservices

To eliminate the daily build issues caused by manual processes, Irish financial services platform Capitalflow Group DAC migrated to a microservices architecture unified under Terraform. Today, every deployment they make is completely consistent and auditable.

Denmark

Critical infrastructure moved from on-premise to AWS with zero downtime

Polytech A/S moved critical infrastructure from on-premise to AWS with zero downtime, through a secure site-to-site VPN built for the migration. Operations now run on automated CI/CD pipelines instead of manual processes.

Critical Infrastructure

Banking

Poland

A bank's RAG system running entirely on CloudFerro

A regional European bank deployed a retrieval-augmented generation system entirely on CloudFerro, so the bank's document and query data never touched non-EU infrastructure, a common blocker for GenAI projects in banking.

Move to Sovereign Cloud with European Partner

Ready to build infrastructure that meets the highest standards for data residency and security? Get in touch with our European-based cloud architects to design a sovereign migration plan that fits your business.

Talk to our cloud team

ISO/IEC 27001 certified

Architecting the next standard

Real-world insights and engineering documentation from our latest Data, AI, Cloud and Software deployments.

Open the library

What Is a Sovereign Cloud? A Guide for European Business Leaders

Olga Gierszał

Anna Burzyńska

August 7, 2026

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CloudFerro Sovereign Cloud: Pros, Cons, and Best-Fit Use Cases

Janusz Kukla

July 24, 2026

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Sovereign Cloud with StackIT: Architecture, Strengths and Use Cases

Janusz Kukla

August 7, 2026

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AWS Sovereign Cloud: Benefits, Trade-offs, and Best-Fit Use Cases

Janusz Kukla

September 16, 2026

Read now →

Why STX Next?

Certified security backed by 100% EU ownership

STX Next is incorporated and headquartered in Poland, under EU law. Our information security management is independently certified under ISO 27001.

Provider-neutral across sovereign platforms

Our recommendation is based on your regulatory profile and workload needs, not which platform we'd rather sell. Beyond our core partners, CloudFerro, STACKIT, Microsoft and AWS, we build on OVHcloud or on-prem infrastructure when that's the better fit.

Open standards, so you are never locked in

Every environment we deliver runs on infrastructure-as-code and open-source tools including Kubernetes. You get full visibility into the build, and the ability to move again later without starting from zero.

Complete key control

We implement advanced encryption standards inducing BYOK (Bring Your Own Key) and HYOK (Hold Your Own Key), ensuring no cloud provider or external third party ever has access to your sensitive assets.

Upfront clarity on costs and SLAs

We eliminate surprises during the assessment phase. By conducting SLA reviews of potential providers and delivering Total Cost of Ownership (TCO) analysis, we ensure your chosen infrastructure fits your requirements and budget.

Exit strategies engineered from day one

Sovereignty isn’t complete if you’re trapped in a proprietary ecosystem. By embedding exit planning into the process, we guarantee your data and workloads stay vendor-agnostic and easy to migrate.