Magazine
S3 Compatible Storage
Hybrid Cloud

Finding a More Affordable Alternative to AWS Storage in 2025

10.11.2025

8

Minutes
Thomas Demoor
CTO Impossible Cloud
How to eliminate surprise egress fees and vendor lock-in with a predictable, S3-compatible storage model.

For many IT leaders, unpredictable cloud storage costs are the primary budget challenge. Egress fees can inflate monthly bills by 3-5x, making ROI calculations nearly impossible and creating significant vendor lock-in. The search for a more affordable alternative to AWS storage is no longer just about saving money-it's a strategic move to regain data control, ensure performance, and build a practical exit strategy. This article outlines a checklist for selecting an enterprise-ready S3-compatible solution that delivers cost predictability and robust security for critical workloads like backup and disaster recovery.

Key Takeaways

  • Eliminate 60-80% of cloud storage costs by choosing a provider with no egress fees, API call charges, or minimum storage durations.
  • Ensure any alternative is 100% S3-compatible to guarantee seamless migration and prevent vendor lock-in.
  • Prioritize solutions with immutable storage (Object Lock) and enterprise-grade certifications like SOC 2 and ISO 27001 for ransomware protection and compliance.

Escape the Hidden Costs of Hyperscaler Storage

Cost unpredictability remains the number one cloud pain point for most enterprises in 2025. A recent industry study found that 62% of IT leaders exceeded their cloud budgets, with unexpected egress fees being a primary reason. These charges, incurred each time data is moved, can make up 10% to 15% of total cloud costs. This model creates strategic risks, as high exit costs effectively lock organizations into a single provider.

Moving just 50TB of data to another provider can cost between $3,500 and $7,000 in egress fees alone, discouraging strategic platform changes. This financial barrier limits flexibility, even when another platform offers superior performance or efficiency. The search for a more affordable object storage solution is now a critical business priority. This reality forces a re-evaluation of storage architecture away from models with punitive fees.

Adopt a Predictable, Cost-Efficient Storage Model

A truly affordable alternative to AWS storage eliminates surprise fees entirely. Impossible Cloud offers a transparent economic model with zero egress fees, no API call costs, and no minimum storage durations. This approach is designed for predictability, helping organizations save 60-80% on typical cloud storage expenses. All data is immediately accessible in an "Always-Hot" object storage model, removing restore delays and tiering complexity.

This simplified structure makes budget planning possible again. For Managed Service Providers (MSPs), predictable costs enable competitive Backup-as-a-Service (BaaS) and Disaster-Recovery-as-a-Service (DRaaS) pricing with healthy, defensible margins. With a transparent model, you can find cloud storage with no hidden costs. This shift toward cost efficiency is fundamental for long-term financial health.

Demand S3 Compatibility That Just Works

True S3 compatibility is a non-negotiable feature for any viable storage alternative. It ensures that existing applications, scripts, and tools continue to work without code rewrites, protecting past investments and minimizing migration risk. An effective S3-compatible solution allows you to simply change the endpoint and keep everything else, making it a true drop-in replacement. This seamless integration accelerates time-to-value by months.

An enterprise-ready platform must support advanced S3 capabilities. Here is what to look for:

  • Full support for versioning, lifecycle management, and event notifications.
  • Consistent performance across API, CLI, and SDK interfaces.
  • Out-of-the-box integrations with leading backup tools like NovaBackup.
  • Strong read/write consistency for mixed workloads, from millions of small files to large archives.

This level of compatibility ensures your S3 storage solution is both powerful and easy to adopt. It also forms the foundation of a practical exit strategy, preventing future vendor lock-in.

Prioritize Ransomware Protection and Enterprise Compliance

With backup infrastructure now a primary target for cyberattacks, robust security features are essential. Immutable storage with Object Lock is a mission-critical capability for ransomware protection. It creates a virtual air gap, making backup data unchangeable for a specified retention period, even by administrators. Gartner estimates that 75% of IT organizations will face a ransomware incident by 2025, making immutability a core defense.

Data integrity is further protected by multi-layer encryption, both in transit and at rest. An enterprise-grade solution must also provide verifiable compliance certifications to meet regulatory needs. Impossible Cloud holds SOC 2 and ISO 27001 certifications, ensuring its suitability for regulated workloads in sectors like financial services. This focus on security underpins a resilient data protection strategy.

Leverage an Architecture Built for Performance

Performance should not be sacrificed for affordability. An "Always-Hot" storage model ensures all data is immediately accessible, eliminating the restore delays and fees associated with complex data tiering. This architecture delivers up to 20% faster backup performance compared to traditional cloud storage by providing consistent low latency. It simplifies operations and keeps third-party tools stable, as there are no API timeouts from fragile lifecycle policies.

A modern storage architecture should deliver the following performance metrics:

  1. Predictable latencies for both read and write operations.
  2. Multi-AZ replication to eliminate single points of failure.
  3. Scalable handling of large object sets without performance degradation.
  4. Guaranteed service levels that support business planning.

This consistent performance is crucial for backup and disaster recovery use cases where every second counts. It ensures your object storage is always ready.

Build a Practical Exit Strategy from Day One

Vendor lock-in is a top concern among IT leaders, often realized too late. A genuine AWS storage alternative must have a built-in exit strategy. The combination of 100% S3 API compatibility and the elimination of egress fees provides the ultimate data portability. This preserves your negotiation power and long-term freedom of action, allowing you to move data whenever and wherever you need without financial penalties.

This freedom is the core of data independence. By building on open standards and ensuring easy data movement, you break free from proprietary ecosystems. Organizations can confidently deploy a more affordable alternative to AWS storage while knowing they retain full control over their data's future. This strategic advantage is just as important as the immediate cost savings.

FAQ

How does Impossible Cloud achieve 60-80% cost savings compared to other cloud providers?

The cost savings come from our transparent pricing model. We have eliminated egress fees, API request charges, and minimum storage durations, which are often the hidden costs that inflate bills from traditional hyperscale providers.


Is it difficult to migrate my data to Impossible Cloud?

No, migration is straightforward. Because we are fully S3-compatible, you can use your existing tools and scripts. In most cases, you only need to change the service endpoint in your configuration to start using our platform.


What security and compliance certifications does Impossible Cloud hold?

We provide enterprise-grade security and compliance. Our platform is SOC 2 and ISO 27001 certified, and we offer features like multi-layer encryption and Immutable Storage with Object Lock for ransomware protection.


What is 'Always-Hot' storage?

Our 'Always-Hot' storage model means all your data is always immediately accessible without any retrieval delays or restore fees. This simplifies operations and improves performance compared to tiered storage models that move data to slower, offline archives.


Is this solution suitable for Managed Service Providers (MSPs)?

Yes, our platform is designed for MSPs. The predictable pricing model with no egress fees allows for stable, healthy margins on BaaS and DRaaS offerings. We also provide a multi-tenant partner console with automation and reporting capabilities.


How does Impossible Cloud ensure I am not locked into your service?

We believe in data freedom. Our service is built on the S3 API standard, and we have no egress fees. This means you can move your data to another provider at any time without technical barriers or financial penalties.


Would you like more information?

Send us a message and our experts will get back to you shortly.