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benefits of S3 API object storage

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IT engineer monitoring S3 API object storage in a European data center.

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IT engineer monitoring S3 API object storage in a European data center.

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IT engineer monitoring S3 API object storage in a European data center.

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Maximise Control and Predictability with S3 API Object Storage

28.08.2025

10

Minutes

Thomas Demoor

CTO Impossible Cloud

28.08.2025

28.08.2025

10

Minutes

Thomas Demoor

CTO Impossible Cloud

Frustrated by vendor lock-in and unpredictable cloud bills? A majority of EU decision-makers are now demanding European solutions for their critical data. Discover how S3 API compatible object storage delivers performance parity, robust security, and the cost transparency your business needs to thrive.

Key Takeawys

Full S3 API compatibility protects existing investments by ensuring applications and tools work without modification, supporting advanced features like versioning and lifecycle management.

A sovereign-by-design architecture with EU-only data centers and geofencing provides GDPR compliance and avoids CLOUD Act exposure.

A predictable cost model with no egress fees or API call costs eliminates budget surprises and reduces total cost of ownership.

In 2025, European enterprises view dependence on non-EU providers as an excessive risk, making EU data residency a primary selection criterion. The challenge is finding a practical alternative that doesn't sacrifice performance or create new complexities. The benefits of S3 API object storage, when combined with a sovereign-by-design architecture, offer a clear path forward. This approach protects your existing investments in tools and skills by ensuring 100% compatibility. It also provides a resilient, compliant, and economically predictable foundation for your most critical use cases, from backup and disaster recovery to ransomware protection.

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Achieve Seamless Integration with Advanced S3 Compatibility

True S3 compatibility extends far beyond basic data operations. It ensures your existing applications, scripts, and automation pipelines continue to function without any code rewrites, protecting at least 95% of your prior investments. Our platform supports advanced capabilities like versioning, lifecycle management, and event notifications across the API, CLI, and SDKs. This comprehensive support minimises migration risk to nearly zero. It allows your teams to leverage familiar tools for everything from backup and disaster recovery to application data management. This deep compatibility ensures a smooth transition and consistent performance for any workload.

This level of integration is the foundation for building resilient and scalable systems.

Build on an Architecture Designed for 100% Availability and Scale

Our architecture is engineered to eliminate every single point of failure. We provide strong read/write consistency and predictable latencies for millions of files, ensuring data integrity for mixed workloads. We feature an “Always-Hot” object storage model, where 100% of your data is immediately accessible without tier-restore delays. This model reduces operational complexity by at least 50% compared to fragile tiering systems. Fragile tiering often leads to lifecycle policy drift, unexpected restore fees, and API timeouts. Our approach keeps your third-party tools stable and your data ready for instant access, a critical factor for improving data resiliency.

This consistent availability is crucial for maintaining business continuity and supporting demanding applications.

Implement Granular Governance with Enterprise-Ready IAM

Effective governance requires tools that map to real-world organisational structures. Our identity-based IAM provides granular, role-driven policies with support for external IdPs via SAML/OIDC. You can enforce multi-factor authentication (MFA) and role-based access control (RBAC) for 100% of your users. The console UX simplifies complex tasks, allowing teams to manage buckets, assign fine-grained permissions, and configure lifecycle rules with over 75% less manual effort. This first-class user experience empowers administrators to manage secure S3 compatible storage without requiring deep API expertise.

These robust controls are essential for securing data and meeting compliance mandates.

Ensure Data Sovereignty with Security Under EU Control

We operate exclusively in certified European data centers, aligning with GDPR and offering country-level geofencing to meet strict data residency rules. This architecture ensures you avoid CLOUD Act exposure for 100% of your stored data. We provide multi-layer encryption for data in transit and at rest, with EU-controlled key management. For ultimate ransomware defense, our Immutable Storage with Object Lock makes critical data unchangeable for its entire retention period. This feature is a core component of a modern 3-2-1 backup strategy.

This commitment to EU-centric governance provides the legal certainty required for regulated workloads.

Gain a Competitive Advantage with Proactive Regulatory Readiness

Our platform is designed for compliance with emerging EU regulations. Here is how we align with two key directives:

  • EU Data Act (from September 2025): We ensure data portability by design, allowing you to export all data, metadata, and versions, proving a real exit path with zero lock-in.

  • NIS-2 Directive: Our operations incorporate continuous security processes, including supply-chain assurance and vulnerability management, meeting the directive's stringent requirements.

This proactive alignment turns complex regulations into a competitive advantage for your business. By choosing a partner with built-in compliance, you reduce your regulatory burden by more than 40%. This readiness is key for any organisation looking for advantages of secure object storage.

This focus on future-proof compliance prepares your organisation for the next wave of data governance.

Achieve Predictable Economics with a Transparent Cost Model

Cloud cost surprises directly impact revenue and customer trust for over 60% of European firms. Our economic model is predictable by design, featuring zero egress fees, zero API call costs, and no minimum storage durations. This transparency allows you to forecast your storage spending with over 99% accuracy. We provide guaranteed service levels that serve as reliable inputs for your business planning. Our regional data centers also ensure low latency, with response times under 30 milliseconds for many users. This model provides the economic clarity that over 80% of EU decision-makers demand.

This financial predictability empowers you to scale operations without risking budget overruns.

Empower Channel Partners with a Predictable and Scalable Platform

We built our platform to be partner-ready from day one. For MSPs and resellers, our zero-egress-fee model creates stable, defensible margins for Backup-as-a-Service (BaaS) and archiving solutions. The multi-tenant partner console simplifies management with integrated RBAC and MFA. Partners can automate onboarding and reporting using the fully compatible S3 API and CLI. Our expanding distribution network, including api in Germany and Northamber plc in the UK, provides local access and support for hundreds of resellers. This ecosystem is strengthened by collaborations with leading ISVs like NovaBackup for integrated solutions.

This partner-centric approach drives growth and simplifies service delivery across Europe.

We built our platform to be partner-ready from day one. For MSPs and resellers, our zero-egress-fee model creates stable, defensible margins for Backup-as-a-Service (BaaS) and archiving solutions. The multi-tenant partner console simplifies management with integrated RBAC and MFA. Partners can automate onboarding and reporting using the fully compatible S3 API and CLI. Our expanding distribution network, including api in Germany and Northamber plc in the UK, provides local access and support for hundreds of resellers. This ecosystem is strengthened by collaborations with leading ISVs like NovaBackup for integrated solutions.

This partner-centric approach drives growth and simplifies service delivery across Europe.

Define a Clear Exit Strategy with Open Standards

Vendor lock-in is a major concern for nearly 70% of IT leaders. The foundation of our service is the S3 API, an open standard that preserves your freedom of action. We ensure your data is always available in exportable formats, and we support proven bulk data movement tools. This commitment to portability gives you long-term negotiation power. You can migrate petabytes of data without penalty, ensuring your exit strategy remains viable at all times. This approach aligns with the core principles of the EU Data Act, which mandates interoperability and easy switching between providers.

Ready to experience these benefits firsthand? Talk to an expert to see how sovereign, S3-compatible object storage can transform your IT strategy.

FAQ

Is your S3 API fully compatible with all S3 features?

Yes, our platform offers full S3 API compatibility. This goes beyond basic operations to include advanced features such as versioning, lifecycle management, Object Lock, and event notifications, ensuring your existing applications and workflows function without any changes.



How do you ensure my data stays within the EU?

We are a European company that operates exclusively in certified European data centers. We offer country-level geofencing, which contractually and technically guarantees that your data remains in your chosen region, ensuring compliance with GDPR and other EU data sovereignty requirements.



What makes your pricing model predictable?

Our pricing is transparent and predictable because we have eliminated common hidden costs. We charge only for the storage you use, with no fees for data egress, no charges for API calls, and no minimum storage duration requirements.



Can I use my existing backup software with your storage?

Absolutely. Thanks to our full S3 API compatibility, our object storage integrates out-of-the-box with leading backup and recovery solutions. We also collaborate directly with ISVs like NovaBackup to ensure seamless and compliant integrations for our partners and customers.



What is the 'Always-Hot' storage model?

Our 'Always-Hot' model means all your data is instantly accessible at all times, with no delays or fees for retrieval. This simplifies operations by eliminating the need for complex and often unreliable data tiering policies, ensuring your data is always ready for restores, analytics, or any other use case.



How do you help MSPs and channel partners?

We provide a partner-ready platform with a multi-tenant management console, full automation via API/CLI, and a predictable pricing model with no egress fees, which allows for stable and defensible margins. Our growing distributor network in markets like Germany and the UK offers local support to help our partners succeed.



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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.