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How to Modernise Enterprise Cloud Backup with a Sovereign S3 API

27.07.2025

10

Minutes

Thomas Demoor

CTO Impossible Cloud

27.07.2025

27.07.2025

10

Minutes

Thomas Demoor

CTO Impossible Cloud

European enterprises face a critical challenge: modernising backup infrastructure while navigating data sovereignty laws and unpredictable cloud costs. A sovereign, S3-compatible cloud offers a clear path to compliance and economic control.

The topic briefly and concisely

Adopt a sovereign-by-design enterprise cloud backup offering to ensure GDPR compliance and mitigate risks from foreign laws like the US CLOUD Act.

Leverage full S3 API compatibility to avoid vendor lock-in, protect existing tool investments, and simplify migration.

Eliminate unpredictable cloud costs with a transparent pricing model that has zero egress fees, no API charges, and no minimum storage durations.

For UK and EU enterprises, selecting a cloud backup solution involves more than just capacity and speed. The choice is now a strategic decision impacting regulatory compliance, budget predictability, and cyber resilience. Many organisations feel trapped by complex fee structures from non-EU providers, with nearly 50% of cloud bills consumed by hidden charges like egress fees. Furthermore, regulations like GDPR and the upcoming EU Data Act demand a new level of control over where data resides. This article outlines how enterprise cloud backup offerings with a sovereign design and a fully compatible S3 API provide a practical, future-proof solution. It is the key to unlocking digital autonomy without sacrificing performance.

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Prioritise Digital Sovereignty in Your Backup Strategy

Data sovereignty is a primary concern for 84% of European organisations planning their cloud strategy. Storing backup data within EU borders, governed by EU law, is the only reliable way to ensure GDPR compliance. This approach directly mitigates risks associated with foreign legislation like the US CLOUD Act, which can create legal uncertainty for European businesses. Choosing a 100% European-owned and operated cloud provider removes this ambiguity entirely. A secure object storage solution with country-level geofencing keeps your data within a predefined region, satisfying strict regulatory demands from day one. This focus on sovereignty is no longer optional; it is a core component of modern risk management.

Use Full S3 API Compatibility to Avoid Vendor Lock-in

A fully compatible S3 API is the key to a flexible and future-proof backup strategy. It ensures that your existing backup tools, applications, and scripts continue to work without any code rewrites, protecting at least 10 years of technology investments. This seamless interoperability simplifies data migration between providers, giving you greater control over costs and preventing vendor lock-in. True S3 compatibility goes beyond basic operations to include advanced features like versioning and lifecycle management. An enterprise cloud backup offering built on this standard allows you to switch endpoints with minimal configuration changes. This preserves your operational workflows and empowers you to choose the best cloud backup provider based on value and compliance, not dependency.

Build a Ransomware-Proof Architecture with Immutable Storage

Ransomware attacks increasingly target backup systems to prevent recovery. Immutable storage, enabled by S3 Object Lock, creates a powerful defence by making your backup data unchangeable for a defined period. This guarantees that even if attackers breach your primary systems, you have a clean, unalterable copy ready for restoration. Our “Always-Hot” architecture ensures 100% of this immutable data is instantly accessible, eliminating restore delays that can cripple business operations. This model avoids the complexity and hidden fees of tiered storage, where retrieving archived data can take hours. An effective ransomware defence requires a multi-layered approach, and here are four key elements:

  • Implement S3 Object Lock on all critical backup copies to create true immutability.

  • Follow the 3-2-1 rule, keeping at least three copies of your data, with one offsite and immutable.

  • Regularly test your restore procedures to validate backup integrity and ensure rapid recovery.

  • Use Identity and Access Management (IAM) with multi-factor authentication (MFA) to control access to storage accounts.

This robust framework ensures your Acronis backup solution is always secure and recoverable.

Achieve Predictable Cloud Economics Without Egress Fees

Unpredictable costs are a major obstacle for enterprises, with 56% of European organisations overspending their cloud storage budgets. A significant driver of this overspend is egress fees and API call charges, which can account for nearly half of a total cloud bill. A transparent pricing model with zero egress fees, no API charges, and no minimum storage duration eliminates these surprises entirely. This allows you to forecast your spending with 100% accuracy. You can retrieve your data as often as needed for restores, testing, or analytics without financial penalties. This predictable-by-design approach gives your finance teams clarity and frees your IT teams to use data without worrying about cost implications, a key benefit for any Veeam backup strategy.

Prepare for 2025 EU Regulations: NIS-2 and the Data Act

Two major EU regulations will reshape the digital landscape in 2025. The NIS-2 Directive requires organisations to implement robust cybersecurity measures, with a strong focus on supply chain security and incident reporting. The EU Data Act, applicable from September 2025, mandates data portability and makes it easier for customers to switch cloud providers without technical or contractual barriers. A sovereign cloud provider with a standards-based S3 API aligns perfectly with these new requirements. By design, it offers a clear exit path and transparent operations, satisfying the Data Act’s portability rules. Its inherent security features, like multi-layer encryption and immutable storage, help you meet the stringent demands of NIS-2. Choosing a compliant Veeam S3 compatible target is a proactive step toward meeting these future obligations.

Create Value for MSPs and Channel Partners

For Managed Service Providers (MSPs) and resellers, predictable margins are essential for building profitable Backup-as-a-Service (BaaS) offerings. An enterprise cloud backup offering with no egress or API fees provides exactly that. This model allows partners to build services with defensible margins, free from the cost volatility of other platforms. A partner-ready platform should include these three features:

  1. A multi-tenant console for simplified client management, including role-based access control (RBAC).

  2. Full automation capabilities via API and CLI for streamlined onboarding and reporting.

  3. Rapid onboarding processes that take hours, not weeks, to get new clients protected.

With growing distribution momentum through partners like api in Germany and Northamber plc in the UK, local access for resellers is expanding. This ecosystem provides the tools and economic stability for partners to succeed with channel S3 object storage.

Follow a 4-Step Plan for a Seamless Migration

Content


<p>Migrating your backup storage to a new S3-compatible provider is a straightforward process. A well-defined plan minimises risk and ensures a smooth transition with zero downtime for your backup operations. <strong>The key is to leverage the full compatibility of the S3 API to simplify the switch.</strong> This process typically involves just four steps for your IT team of 5 or more. Here is a practical checklist to guide your migration:</p><ul><li><strong>Step 1: Configure the New Endpoint.</strong> Update your backup software (e.g., Veeam, Acronis) by changing the S3 endpoint URL to your new provider and entering your new credentials.</li><li><strong>Step 2: Replicate Policies.</strong> Recreate your existing bucket policies, lifecycle rules, and access permissions in the new environment to ensure consistent governance.</li><li><strong>Step 3: Sync Data.</strong> Use your backup application’s built-in data mobility features or a sync tool to move your existing backup chains to the new storage target.</li><li><strong>Step 4: Test and Verify.</strong> Perform a test restore from the new repository to confirm data integrity and validate that your recovery time objectives (RTOs) are met.</li></ul><p>This structured approach ensures your <a href="/partner/s3-api-cloud-storage-distributor-partner">S3 API cloud storage</a> migration is successful and efficient.</p>


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FAQ

Is your S3 API fully compatible with my existing backup tools?

Yes, we offer full S3 API compatibility that goes beyond basic functions. This allows your existing applications, scripts, and backup tools like Veeam and Acronis to work seamlessly. You can switch to our service by changing the endpoint in your configuration, with no need for code rewrites.



How do you ensure my data stays within the UK or EU?

Our platform is sovereign by design. We operate exclusively in certified European data centers and offer country-level geofencing. This guarantees your data is stored and processed only within your chosen region, ensuring compliance with GDPR and other local data residency regulations.



What does 'no egress fees' really mean for my business?

It means you can access and retrieve your data as often as you need without incurring any extra charges. This is critical for disaster recovery, testing, and analytics. Your bill is based purely on the amount of storage you use, making your costs completely predictable.



Can I use immutable storage to meet compliance requirements?

Absolutely. Our S3 Object Lock feature creates immutable backups that provide a verifiable, unchangeable record of your data. This helps you meet strict retention and data integrity rules for regulations like GDPR, NIS-2, and other industry-specific mandates.



How quickly can I onboard as a new partner or MSP?

Our partner onboarding is designed to be fast and efficient, often taking just a few hours. We provide a multi-tenant management console and full automation via API and CLI to help you get your clients' backup services running quickly and without complexity.



What is an 'Always-Hot' storage model?

An 'Always-Hot' model means all your data is immediately accessible at all times, with no delays or extra fees for retrieval. Unlike tiered storage that moves data to slower, cheaper 'cold' layers, our model eliminates restore delays and API timeouts, simplifying operations and ensuring your data is always ready for recovery.



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