Sovereign Cloud
— on AWS
Storm Reply secures your cloud sovereignty: EU data sovereignty, AWS European Sovereign Cloud and GDPR-compliant architectures — for enterprises and public authorities across the DACH region.
From Analysis to Sovereign Cloud
Our structured approach takes you from compliance analysis through architecture design to a certified sovereign cloud environment.
Sovereignty Analysis
Assessment of your current compliance position: GDPR, NIS2, BSI C5, sector-specific requirements, and identification of gaps.
Architecture Design
Design of a sovereign landing zone with data residency, key management, and access controls following the least-privilege principle.
Implementation
Delivery of the sovereign architecture: KMS/CloudHSM, Control Tower, SCPs, Config Rules, CloudTrail, and Security Hub.
Certification
Support for ISO 27001, BSI C5, and sector-specific certifications with comprehensive documentation and complete audit trails.
Operations & Monitoring
Continuous compliance monitoring, automated drift detection, and regular sovereignty audits during ongoing operations.
Our Core Services
Specializing in the most demanding sovereignty and compliance requirements — from EU data sovereignty to full key management control.
EU Data Sovereignty
Ensuring all data physically remains within the EU. Automated guardrails with AWS Control Tower and Service Control Policies prevent any resource creation outside EU regions.
Key Management
Full control over encryption with AWS KMS and CloudHSM. Bring Your Own Key (BYOK) and External Key Store (XKS) for maximum operational sovereignty and independence.
AWS European Sovereign Cloud
Advisory and migration to the AWS European Sovereign Cloud (ESC) — the standalone AWS stack within the EU. Planning, architecture, and implementation for organisations with the strictest sovereignty requirements.
Compliance Frameworks
Implementation of GDPR, NIS2, BSI C5, and sector-specific compliance requirements on AWS. Automated compliance checks with AWS Security Hub and continuous monitoring.
Sovereign Landing Zones
Design and implementation of landing zones with built-in sovereignty: multi-account strategy, network isolation, centralized logging infrastructure, and automated policy enforcement.
Successful Sovereignty Projects
Measurable outcomes from cloud sovereignty projects delivered by Storm Reply for enterprises and public sector clients.
EU Data Residency
Complete data sovereignty: all workloads and data remain exclusively within EU regions — enforced by automated guardrails that technically prevent resource creation outside the EU.
Certification Support
Successful delivery of BSI C5 certification projects on AWS — from gap analysis and control implementation through to audit preparation and auditor accompaniment.
Sovereign Landing Zone
Delivery of a fully sovereign landing zone in 3 months: multi-account architecture, KMS with BYOK, Control Tower, automated compliance checks, and complete audit trails.
NIS2 Readiness
Implementation of NIS2 requirements on AWS for critical infrastructure operators: incident response processes, supply chain risk management, and automated vulnerability management.
Customers & Partners
Cloud sovereignty for enterprises, public authorities, and regulated industries across the DACH region.
Consulting Partner Since 2014
Competency Partner Security Competency
Service Provider MSP Partner Since 2013
Recognized Expertise on AWS
Your Strategic AWS Premier Partner
Storm Reply is the AWS-specialized company within the Reply Group — holding the highest AWS partner status: Premier Tier Services Partner since 2014. In the DACH market, we guide businesses from strategy through migration to ongoing operations.
As part of the Reply Group, you benefit from 16 AWS Competencies, 1,500+ AWS certifications, and a network of over 2,000 AWS professionals — across 6 locations in Germany.
FAQ on Cloud Sovereignty on AWS
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Cloud sovereignty means that companies and public authorities retain full control over their data, processes and software in the cloud — regardless of where the cloud provider is based. It encompasses data sovereignty (where data resides), operational sovereignty (who has access) and software sovereignty (no lock-in dependencies). In the European context, cloud sovereignty is inseparable from the GDPR and the EU Data Governance Act.
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The AWS European Sovereign Cloud (ESC) is a standalone cloud stack from AWS, operated entirely within the EU and designed specifically for organisations with strict sovereignty and compliance requirements. AWS employees from the EU manage the infrastructure; data never leaves the EU. The ESC offers the same AWS API compatibility as standard regions.
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GDPR compliance is a legal minimum requirement for processing personal data in the EU. Cloud sovereignty goes further: it ensures that data is not only processed lawfully but that the operator retains operational control at all times — through their own key management (KMS, HSM), audit logging, and the ability to take full control of operations when needed.
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Data residency refers to the requirement that data physically remains stored in a specific geographic region. AWS contractually guarantees that data is only stored in the selected region (e.g. eu-central-1 Frankfurt). Using AWS Control Tower, Service Control Policies (SCPs) and AWS Config Rules, Storm Reply can implement automated guardrails that technically prevent any resource from being created outside the EU region.
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Storm Reply guides organisations from sovereignty analysis through architecture to implementation: assessment of the current compliance position, design of sovereign landing zones, implementation of key management with AWS KMS and CloudHSM, establishment of audit trails with CloudTrail and Security Hub, and certification support (ISO 27001, BSI C5). As an AWS Premier Consulting Partner with Security Competency, we bring deep expertise from 600+ cloud projects.
Ready for Sovereign Cloud?
Our sovereignty experts analyse your compliance requirements and develop a cloud architecture with built-in data sovereignty.
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