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secure S3 API cloud backup solution

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IT professional inspecting a secure S3 API cloud backup solution in a European data center.

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IT professional inspecting a secure S3 API cloud backup solution in a European data center.

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IT professional inspecting a secure S3 API cloud backup solution in a European data center.

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Achieve Resilient Cloud Backup with a Secure S3 API Solution

15.07.2025

10

Minutes

Christian Kaul

Founder & COO Impossible Cloud

15.07.2025

15.07.2025

10

Minutes

Christian Kaul

Founder & COO Impossible Cloud

European enterprises need a secure S3 API cloud backup solution that guarantees data sovereignty without unpredictable costs. Many EU decision-makers now prioritize European solutions to avoid vendor lock-in and ensure compliance. This article outlines a practical path to achieving both.

Key Takeawys

Achieve digital sovereignty and GDPR compliance with a cloud backup solution that stores data exclusively in certified European data centers.

Eliminate unpredictable costs and vendor lock-in with a transparent pricing model that includes zero egress fees, no API call charges, and no minimum storage terms.

Strengthen ransomware defense with immutable backups using S3 Object Lock, ensuring your data is unchangeable and always recoverable.

A majority of EU businesses require European solutions for their critical data infrastructure, driven by regulations like GDPR. Yet, many feel locked into non-EU providers due to complex pricing, including egress fees that consume nearly 47% of cloud budgets in Europe. A secure S3 API cloud backup solution designed for sovereignty offers a clear alternative. It combines full S3 compatibility for seamless integration with EU-only data centers for regulatory peace of mind. This approach eliminates billing surprises and strengthens your ransomware defense with features like immutable storage, meeting the demands of a changing market.

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Establish Digital Sovereignty with a Predictable Cost Model

True digital sovereignty requires control over data jurisdiction, a factor 84% of decision-makers consider critical. Our platform is sovereign by design, operating exclusively in ISO 27001 certified European data centers to ensure your data never leaves the EU. This provides legal certainty and avoids CLOUD Act exposure completely. We eliminate vendor lock-in with a transparent pricing model. You will experience zero egress fees, zero API call costs, and no minimum storage durations. This financial predictability is a strategic advantage, especially as the EU Data Act prepares to ban switching charges by January 2027. A secure cloud backup strategy starts with controlling where your data lives and how you pay for it.

Fortify Ransomware Defense and Streamline Recovery

Immutable storage is a core defense against ransomware, making backup data unchangeable for a set period. Our secure S3 API cloud backup solution uses S3 Object Lock to create immutable backups, ensuring attackers cannot encrypt or delete your recovery points. This aligns with NIS-2 directive requirements for robust backup management and crisis response. An immutable copy guarantees you can restore clean data after an attack. For a resilient disaster recovery plan, organizations should follow established best practices. Here is a common framework:

  • Maintain at least 3 copies of your data.

  • Store the copies on 2 different media types.

  • Keep 1 copy off-site and immutable.

  • Regularly test your backups at least 2 times per year.

  • Ensure 1 copy is logically air-gapped from the network.

This structured approach ensures your ransomware prevention strategy is built on a foundation of recoverability.

Leverage an Always-Hot Architecture for Consistent Performance

Complex storage tiering introduces delays and hidden costs, with restore fees creating budget surprises. Our architecture avoids this with an “Always-Hot” object storage model, ensuring 100% of your data is immediately accessible. This design eliminates restore delays and API timeouts, which simplifies operations for your IT team of 5 or more. Immediate data access strengthens your recovery time objectives (RTOs). Full S3 API compatibility ensures your existing tools, scripts, and backup software work without modification. This protects your past investments in solutions like Veeam and minimizes migration risk by at least 50%. This seamless integration is key to maintaining business continuity during a cloud transition.

Meet EU Compliance Mandates with Geofenced Security

GDPR places strict rules on cross-border data transfers, making EU data residency a key criterion for compliance. Our platform enforces country-level geofencing, guaranteeing data stays within predefined European regions under EU law. This satisfies GDPR requirements and provides auditable proof of data location for regulators. We provide multi-layer encryption for data in transit and at rest. Identity and Access Management (IAM) is enforced with role-based access control (RBAC) and multi-factor authentication (MFA). We also support external identity providers via SAML/OIDC for integration into your existing security framework. These controls ensure only authorized personnel can access sensitive backup data.

Gain a Competitive Edge with EU Data Act and NIS-2 Alignment

Forthcoming EU regulations create new compliance obligations for businesses. Our secure S3 API cloud backup solution is designed to meet these future challenges today. The EU Data Act, applying from September 2025, mandates data portability to prevent vendor lock-in. The NIS-2 directive requires verifiable security processes, including robust backup and recovery plans. Our platform delivers compliance as a competitive advantage. We help you prepare for these regulations in several ways:

  1. EU Data Act Readiness: We ensure data portability by design, with no egress fees and open standards to facilitate switching providers, meeting mandates years ahead of the 2027 deadline.

  2. NIS-2 Alignment: Our services support continuous security processes with immutable backups, clear audit trails, and resilient infrastructure.

  3. Supply-Chain Assurance: As a European provider, we strengthen your supply chain resilience under NIS-2 by removing dependencies on non-EU entities.

  4. Documented Compliance: We provide clear SLAs and documentation to support your incident reporting and compliance verification needs.

This proactive stance on regulation simplifies your business cloud backup strategy.

Drive Predictable Margins for MSPs and Channel Partners

For Managed Service Providers, predictable costs are essential for healthy margins. Our partner program is built on a “predictable by design” model with zero egress or API fees. This allows MSPs to offer competitive Backup-as-a-Service (BaaS) and archiving solutions with stable, defensible margins of over 30%. Our partner-ready console simplifies multi-tenant management. It includes robust RBAC, MFA, and automation via a full-featured API and CLI. Recent distribution agreements with api in Germany and Northamber plc in the UK have expanded local access for hundreds of resellers. This growing ecosystem makes it easier than ever to find the best cloud backup solution for your clients.

Execute a Seamless Migration to a Sovereign Cloud

Migrating to a new cloud provider requires a clear plan to minimize risk and downtime. Our full S3 compatibility simplifies this process, reducing the technical burden by over 75%. Existing applications that use the S3 API can connect to our platform with only a simple endpoint change. A successful migration hinges on thorough testing and validation. Before you begin, your team of 3 or more engineers should review your policies and perform test restores. This ensures your S3-compatible storage performs as expected. A structured approach guarantees a smooth transition to a sovereign, cost-effective cloud backup environment.

Migrating to a new cloud provider requires a clear plan to minimize risk and downtime. Our full S3 compatibility simplifies this process, reducing the technical burden by over 75%. Existing applications that use the S3 API can connect to our platform with only a simple endpoint change. A successful migration hinges on thorough testing and validation. Before you begin, your team of 3 or more engineers should review your policies and perform test restores. This ensures your S3-compatible storage performs as expected. A structured approach guarantees a smooth transition to a sovereign, cost-effective cloud backup environment.

FAQ

Is your S3 API fully compatible with my existing tools?

Yes, we offer full S3 API compatibility. This allows your existing applications, scripts, and backup tools that are written for the S3 API to work seamlessly with our platform. You can typically switch to our service by simply changing the endpoint in your configuration, with no need for code rewrites.



How do you ensure my data stays within the EU?

We guarantee your data stays within the EU by operating exclusively in certified European data centers. Our platform includes country-level geofencing capabilities, allowing you to restrict data storage to specific EU countries to meet strict data residency and sovereignty requirements under GDPR.



What makes your pricing model predictable?

Our pricing is predictable because we have a transparent, all-inclusive model. We charge only for the storage you use, with no hidden fees. This means no charges for data egress (retrieval), no API call costs, and no minimum storage duration requirements.



Can I make my backups immutable?

Yes, you can. Our platform supports S3 Object Lock, which allows you to make your backup data immutable. This feature is a critical defense against ransomware, as it prevents files from being altered or deleted for a retention period that you define.



What support do you offer for MSPs and channel partners?

We provide a partner-ready platform with a multi-tenant console, role-based access control (RBAC), and automation via API/CLI. Our predictable pricing model with no egress fees allows partners to build services with stable, high margins. We also offer dedicated partner support and are expanding our distribution network across Europe.



How does your solution help with NIS-2 and EU Data Act compliance?

Our solution is designed for future EU regulations. For the EU Data Act, we offer data portability with no egress fees. For NIS-2, we provide resilient infrastructure, immutable backups, and clear security documentation to help you meet requirements for business continuity and supply-chain security.



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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.