Cloud Storage

S3 Compatible

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IT professionals collaborating in a secure, European data center, highlighting data sovereignty and security.

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IT professionals collaborating in a secure, European data center, highlighting data sovereignty and security.

on

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IT professionals collaborating in a secure, European data center, highlighting data sovereignty and security.

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Achieve Sovereign Big Data Storage with a Predictable, S3-Compatible Platform

02.08.2025

8

Minutes

Christian Kaul

Founder & COO Impossible Cloud

02.08.2025

02.08.2025

8

Minutes

Christian Kaul

Founder & COO Impossible Cloud

Struggling with unpredictable cloud storage costs and complex data residency rules for your big data workloads? A sovereign, S3-compatible object storage platform offers a clear path to regaining control and driving efficiency without re-engineering your existing applications.

Key Takeawys

Achieve digital sovereignty and GDPR compliance with a platform that operates exclusively in European data centers and offers country-level geofencing.

Eliminate vendor lock-in and reduce migration costs to zero with full S3 API compatibility that supports your existing tools and applications without code changes.

Gain cost predictability and control with a transparent pricing model that has no egress fees, no API call costs, and no minimum storage durations.

European enterprises managing big data face a critical challenge: leveraging the cloud's power while ensuring digital sovereignty and cost predictability. Many cloud options create vendor lock-in with complex pricing and expose sensitive data to foreign jurisdictions like the CLOUD Act (5). The solution is an EU-native object storage platform, designed specifically for sovereignty. It delivers full S3 API compatibility, eliminating the need to rewrite applications, combined with a transparent economic model. This approach provides the performance parity and robust security needed to handle petabyte-scale data for backup, disaster recovery, and archiving, all within a strict European legal framework.

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Establish Digital Sovereignty for Big Data

A majority of EU decision-makers now demand European solutions for critical infrastructure, making EU data residency a primary selection criterion. Storing data with non-EU providers creates direct exposure to foreign laws, a risk many organizations can no longer tolerate. (5) Our platform operates exclusively in certified European data centers, offering country-level geofencing to guarantee data remains within a predefined region. This sovereign-by-design approach ensures 100% GDPR compliance. This foundation of EU legal certainty is the first step toward a modern data strategy.

Ensure Seamless Integration with Full S3 API Compatibility

True S3 compatibility goes far beyond basic operations, protecting thousands of development hours invested in existing tools. Our platform supports advanced capabilities like versioning, lifecycle management, and event notifications across any API, CLI, or SDK. This ensures your data pipelines and applications continue running without a single code rewrite. Full compatibility minimizes migration risk to nearly zero. We offer out-of-the-box integrations with leading backup tools, including a deep collaboration with NovaBackup for MSPs. The following capabilities are supported from day one:

  • Standard object operations (GET, PUT, DELETE)

  • Multi-part uploads for large objects

  • Object versioning and lifecycle policies

  • Fine-grained access control with IAM and RBAC

  • Bucket and object tagging for cost allocation

  • Event notifications for automated workflows

This comprehensive support protects past investments while enabling future innovation.

Build for Performance with an Always-Hot Architecture

Complex storage tiering creates operational fragility, leading to restore delays and hidden fees that impact your bottom line by up to 15% (7). We eliminate this with an “Always-Hot” object storage model where all data is immediately accessible in milliseconds. This architecture delivers strong read/write consistency and predictable latencies for mixed workloads, from millions of small files to petabyte-scale archives. Our multi-AZ replication design eliminates single points of failure. This model simplifies operations and ensures third-party tools like S3-native backup solutions remain stable and performant. An always-hot model provides the resilience modern workloads demand.

Defend Against Ransomware with Immutable Storage

Ransomware remains a top threat, making immutable backups a critical defense layer for every organization. Our platform includes Immutable Storage via Object Lock, which prevents data from being altered or deleted for a user-defined period (6). This feature makes your backup data completely immune to malicious encryption attempts. Object Lock provides audit-ready retention for 100% of your critical data. You can implement a robust defense strategy with these four steps:

  1. Define retention periods based on compliance needs.

  2. Enable Object Lock on your primary backup buckets.

  3. Configure IAM policies to restrict permissions.

  4. Regularly test your restore procedures from immutable copies.

This proactive security posture is essential for maintaining business continuity.

Achieve Compliance with EU Regulations by Design

Upcoming EU regulations require a new level of operational readiness that must be built into your storage platform. The EU Data Act, taking effect from September 2025, mandates data portability to prevent vendor lock-in (2). Our use of open standards and exportable formats provides a proven exit path. The NIS-2 Directive demands continuous security processes and supply-chain assurance, which are integral to our operations (3). We turn regulatory readiness into a competitive advantage of 100%. This focus on compliance allows you to confidently handle even the most sensitive workloads, as detailed in our guide to cost-efficient backup solutions.

Drive Partner Success with a Predictable Margin Model

For MSPs and resellers, unpredictable costs directly erode margins and complicate client billing. Our partner model is predictable by design, with zero egress fees, no API call costs, and no minimum storage durations. This allows partners to build stable, defensible margins for Backup-as-a-Service and archiving solutions. The partner console offers multi-tenant management with RBAC and MFA, API/CLI automation, and clear reporting. Our partners see up to 30% faster onboarding times. We are expanding local access across Europe, with distribution momentum from partners like api in Germany and Northamber plc in the UK. This ecosystem empowers our partners to deliver sovereign solutions effectively.

Realize True Cloud Freedom and Cost Control

The greatest challenge of hyperscale cloud storage is economic lock-in driven by punitive egress fees and complex pricing. Our transparent model eliminates these barriers entirely, giving you the freedom to move your data when and where you need it without financial penalty. This preserves your long-term negotiation power and can reduce total cost of ownership by over 60% compared to traditional providers (7). Our guaranteed SLAs provide the economic certainty needed for business planning. By choosing a platform built on open standards, you are selecting a true S3-compatible alternative that prioritizes your freedom of action. This transparent approach is the foundation of a healthy, long-term data strategy.

The greatest challenge of hyperscale cloud storage is economic lock-in driven by punitive egress fees and complex pricing. Our transparent model eliminates these barriers entirely, giving you the freedom to move your data when and where you need it without financial penalty. This preserves your long-term negotiation power and can reduce total cost of ownership by over 60% compared to traditional providers (7). Our guaranteed SLAs provide the economic certainty needed for business planning. By choosing a platform built on open standards, you are selecting a true S3-compatible alternative that prioritizes your freedom of action. This transparent approach is the foundation of a healthy, long-term data strategy.

FAQ

Is your object storage platform fully GDPR compliant?

Yes. Our platform is sovereign by design, operating exclusively in certified European data centers with strict geofencing capabilities. This ensures all data is stored and processed in full compliance with GDPR and other EU regulations.



Can I use my existing backup software and S3 tools?

Absolutely. We provide full S3 API compatibility, which means your existing applications, scripts, SDKs, and backup tools will work seamlessly without any changes. We also have dedicated integrations with leading partners like NovaBackup.



Are there really no egress fees or hidden costs?

That is correct. Our pricing model is transparent and predictable. We charge only for the storage you use, with no fees for data egress, API calls, or minimum storage durations. This eliminates surprise bills and lowers your total cost of ownership.



How does the 'Always-Hot' architecture benefit me?

Our 'Always-Hot' architecture ensures all your data is instantly accessible, eliminating the delays and restore fees associated with tiered storage. This simplifies operations, improves performance for applications, and guarantees your data is ready for recovery at a moment's notice.



What makes your platform a good choice for MSPs?

We are partner-ready. Our predictable pricing model allows MSPs to build stable margins. The platform includes a multi-tenant console, full automation via API/CLI, and robust reporting to simplify management and accelerate onboarding for your clients.



How do you ensure my data is secure?

We provide multi-layer security, including in-transit and at-rest encryption, Identity and Access Management (IAM) with MFA/RBAC, and Immutable Storage with Object Lock to protect against ransomware. Our entire architecture is designed to eliminate single points of failure for maximum resilience.



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Impossible Cloud is your European alternative for S3-compatible object storage. Data resides in GDPR-compliant, certified EU data centers; Object Lock and versioning protect against ransomware. Transparent pricing with no egress or API fees. Perfect for backup, archive, and disaster recovery.

Impossible Cloud is your European alternative for S3-compatible object storage. Data resides in GDPR-compliant, certified EU data centers; Object Lock and versioning protect against ransomware. Transparent pricing with no egress or API fees. Perfect for backup, archive, and disaster recovery.

Impossible Cloud is your European alternative for S3-compatible object storage. Data resides in GDPR-compliant, certified EU data centers; Object Lock and versioning protect against ransomware. Transparent pricing with no egress or API fees. Perfect for backup, archive, and disaster recovery.