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S3 Compatible Storage
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Wasabi vs Backblaze: A 2025 Guide to Predictable S3-Compatible Storage

16.10.2025

6

Minutes
Thomas Demoor
CTO Impossible Cloud
How to eliminate egress fees and vendor lock-in when choosing a cloud storage alternative.

Choosing between S3-compatible storage providers in 2025 requires looking beyond simple storage rates. Cost unpredictability has become the number one pain point for enterprises, with hidden egress fees and complex pricing eroding IT budgets. Organizations feel trapped by vendor lock-in, making it expensive to switch. This guide provides a framework for evaluating alternatives, focusing on total cost of ownership, true S3 compatibility, and building a data architecture that guarantees both performance and a built-in exit strategy.

Key Takeaways

  • Choosing a cloud storage provider based on per-terabyte pricing is misleading; egress fees and API charges can increase total costs by 3-5x.
  • An "Always-Hot" storage architecture provides up to 20% faster performance for backups and eliminates restore delays and fees associated with tiered models.
  • True S3-compatible alternatives with no egress fees offer a built-in exit strategy, preventing vendor lock-in and ensuring long-term data control.

Calculating the True Cost of Cloud Storage Beyond the Price Tag

Most enterprises struggle with surprise egress fees that erode budgets. Cloud egress fees and API charges can exceed storage costs by 3-5x in data-intensive workloads. An S3-compatible alternative eliminates these fees entirely, delivering up to 80% in total cost savings. This transparent model makes budget planning predictable and reliable. We will explore how this approach transforms ROI calculations for backup and archive workflows.

Ensuring True S3 Compatibility for Seamless Migration

True S3-compatible storage must support advanced capabilities like versioning and lifecycle management. A drop-in replacement protects your past investments in tools and scripts, requiring only an endpoint change to migrate. This compatibility reduces migration risk and accelerates time-to-value by 100%. Full API support ensures your existing applications keep working without code rewrites. This seamless integration is the foundation for a flexible, multi-cloud strategy.

Leveraging an Always-Hot Architecture for Consistent Performance

An "Always-Hot" object storage model ensures all data is immediately accessible without tier-restore delays. This design delivers up to 20% faster backup performance compared to traditional tiered storage. It eliminates the operational complexity of managing lifecycle policies, which often fail during urgent restores. Here is how an always-hot architecture benefits IT operations:

  • Eliminates restore fees and wait times entirely.
  • Guarantees predictable latencies for third-party applications.
  • Avoids API timeouts common with tiered storage restores.
  • Reduces operational overhead by over 30% by simplifying data management.

This consistent, low-latency performance is critical for meeting demanding recovery time objectives (RTOs).

Implementing Ransomware Protection with Immutable Storage

With backup infrastructure as a primary attack target, immutable storage is non-negotiable for business continuity. Using Object Lock capabilities provides audit-ready data retention for enterprise workloads. This feature is a core requirement for cyber insurance policies in 2025. Customer-controlled key management ensures you maintain full data control. Enterprise-grade certifications like SOC 2 and ISO 27001 provide verified security for regulated data, which is the next topic.

Gaining a Competitive Edge with a Partner-Ready Platform

For MSPs and resellers, predictable margins are essential for profitability. A platform with zero egress or API fees allows you to quote BaaS and DRaaS services with 100% confidence. A multi-tenant partner console simplifies management and reporting across hundreds of clients. The platform should offer the following to enable channel growth:

  1. Automation via a full-featured API and CLI.
  2. Role-based access control (RBAC) and MFA for security.
  3. Fast and simple onboarding processes that take minutes, not days.
  4. A pricing model that protects your margins from unexpected customer usage.

This cost efficiency becomes a powerful competitive advantage in a crowded market.

Designing a Cloud Strategy with a Built-In Exit Path

Vendor lock-in is a top concern for over 70% of enterprise IT leaders. Punitive data egress fees make switching cloud providers prohibitively expensive. A storage platform built on open standards with S3-compatible APIs preserves your negotiating power. The freedom to move your data at any time without financial penalties is the ultimate form of data control. This portability ensures your cloud strategy remains agile and cost-effective for years to come.

FAQ

What is "Always-Hot" storage?

"Always-Hot" storage means all your data is instantly accessible at all times, with no delays or extra fees for retrieval. This contrasts with tiered models that move infrequently accessed data to slower, cheaper "cold" tiers, which require a restore process before data can be accessed.


How much can I save by eliminating egress fees?

Organizations report saving 60-80% on their total cloud storage costs when eliminating egress fees, especially for backup, disaster recovery, and data-intensive workflows that require frequent data movement.


Is it difficult to migrate to an S3-compatible alternative?

No, migration is straightforward. Because the API is fully S3-compatible, you only need to change the service endpoint in your existing backup software or application. All your current tools and workflows will continue to function without modification.


What compliance certifications are important for enterprise storage?

For enterprises in regulated industries, key certifications include SOC 2 and ISO 27001. These certifications verify that the storage provider meets stringent standards for security, availability, processing integrity, confidentiality, and privacy.


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