Cloud Storage

High Performance

API performance UK

Optimise UK API Performance by Eliminating Latency and Hidden Fees

27.09.2025

10

Minutes

Thomas Demoor

CTO Impossible Cloud

Oct 11, 2025

27.09.2025

27.09.2025

10

Minutes

Thomas Demoor

CTO Impossible Cloud

Is your application's API performance in the UK compromised by high latency and unpredictable cloud bills? A delay of just 100ms can feel sluggish to users, impacting revenue by as much as 1%. Discover how a sovereign, EU-based storage architecture provides a direct, high-performance solution.

Key Takeaways

Sovereign, EU-based storage reduces physical distance to UK users, cutting API latency by up to 70% and improving application responsiveness.

Eliminating egress and API call fees creates predictable costs and performance, removing the budget uncertainty that 56% of IT leaders face with hyperscalers.

An 'Always-Hot' storage model with 100% S3 compatibility ensures all data is immediately accessible, preventing API timeouts and performance issues caused by complex tiering.

For UK businesses, superior API performance is a critical driver of revenue and user satisfaction. Yet, many organisations find their applications hampered by reliance on non-EU cloud providers, leading to inconsistent latency and budget-breaking hidden fees. Research shows that a latency increase of only 100 milliseconds can feel sluggish to users, while egress fees account for an average of 6% of cloud storage costs. This article outlines a strategic approach to enhancing API performance in the UK by leveraging sovereign, S3-compatible object storage with a predictable, zero-fee model. We will explore how EU-centric data storage, full API compatibility, and an always-accessible architecture create a resilient and cost-effective foundation for your most critical applications.

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Reduce API Latency with a Sovereign, UK-Adjacent Architecture

The physical distance between users and servers is a primary cause of API latency, with studies showing that placing servers closer to users can cut this delay by as much as 70%. For UK companies, using cloud providers with data centers outside of Europe introduces significant, unavoidable latency into every API call. Our architecture is sovereign by design, operating exclusively in certified European data centers to keep your data close to your UK operations.

This regional proximity ensures consistently low-latency responses, which is critical for applications where delays over 300ms significantly reduce user engagement. By using country-level geofencing, we guarantee data remains within predefined EU regions, providing a robust solution for improving your cloud storage latency. This EU-only approach also ensures complete avoidance of US CLOUD Act exposure, a key concern for 100% of businesses handling regulated data.

This focus on data locality provides a direct path to better API performance UK-wide.

Achieve Predictable Performance with a Zero-Fee Cost Model

Unpredictable costs directly impact performance planning and budget stability, with 56% of IT professionals citing egress fees as excessive and difficult to forecast. These hidden charges, along with API call costs, penalise data access and create a disincentive for using your data dynamically. We eliminate these variables entirely with a transparent model that includes zero egress fees and zero API call costs.

This approach offers a clear economic and performance advantage for API-driven workloads. Consider the benefits:

  • Predictable Budgeting: Your costs are based purely on storage used, allowing for accurate financial planning for any application at any scale.

  • Unhindered Data Access: Freely move data to and from your storage without incurring financial penalties, encouraging more dynamic application development.

  • Improved ROI: For a SaaS company, cloud hosting can represent up to 12% of revenue; eliminating egress fees directly improves that margin.

  • No Vendor Lock-in: The absence of exit fees gives you the freedom to move your data at any time, a right reinforced by the upcoming EU Data Act.

By removing financial friction, our predictable-by-design model allows you to focus on optimising your API-first storage strategy without fear of surprise invoices.

Guarantee Application Stability with 100% S3 Compatibility

Maintaining stable API performance during and after a cloud migration is essential for business continuity. Incomplete or basic S3 API compatibility forces costly code rewrites and introduces performance risks. Our platform provides full S3-API compatibility, ensuring your existing applications, scripts, and tools continue to work without modification, protecting 100% of your prior investments.

This goes beyond basic object operations to include advanced capabilities like versioning, lifecycle management, and event notifications. This comprehensive support ensures that complex data pipelines and automated workflows run with the same predictable latencies they did before. For UK developers and IT leaders, this means a seamless transition with zero performance degradation, a key factor in successful S3 API implementation.

This commitment to open standards ensures your architecture remains agile and performant.

Deliver Consistent API Responses with an Always-Hot Model

Complex storage tiering is a common source of poor API performance, leading to timeouts and unpredictable delays when data is moved from colder tiers. Our “Always-Hot” object storage model eliminates this problem entirely by ensuring all data is immediately accessible with strong read/write consistency. This architecture is built to handle millions of small files and mixed workloads with predictable, low latencies.

This approach is particularly valuable for backup and disaster recovery, where urgent restores cannot afford tier-restore delays that can take hours. For applications requiring consistent throughput, our model guarantees that 100% of your data is available in milliseconds. This operational simplicity avoids the hidden costs and performance issues associated with lifecycle policy drift and API timeouts common in tiered systems, a crucial element of effective storage performance tuning.

This resilient foundation is key to building highly available, API-driven services.

Align with UK and EU Regulations by Design

Regulatory readiness is a competitive advantage, and upcoming legislation makes sovereign storage a strategic necessity for UK businesses. The EU Data Act, fully applicable from 12 September 2025, mandates data portability and will completely ban data egress fees by January 2027, making our zero-egress model the compliant standard. This act ensures you have a real exit path, preventing the vendor lock-in that 34% of enterprises say has impacted their cloud usage.

Furthermore, the NIS-2 Directive requires UK firms serving the EU to ensure supply-chain security, a mandate our platform supports through its transparent, EU-only operations. We provide the tools to meet these stringent requirements:

  1. Immutable Storage: Use Object Lock for audit-ready retention and ransomware protection, a core tenet of NIS-2.

  2. Geofenced Storage: Keep data in specific EU regions to satisfy GDPR and financial services regulations.

  3. Multi-Layer Encryption: All data is secured both in transit and at rest, with EU-controlled key management.

  4. Granular IAM: Implement role-driven policies with MFA and support for SAML/OIDC to meet strict access control rules.

Our platform bakes in these API security best practices, turning compliance from a hurdle into an asset.

Enable UK Partners to Build High-Margin, Performant Services

For UK Managed Service Providers, resellers, and system integrators, predictable margins are essential for growth. Our partner-ready platform is designed to deliver just that, removing the cost volatility that erodes profitability. With zero egress or API fees, MSPs can build Backup-as-a-Service (BaaS) and archiving solutions with defensible margins of over 40%.

Through our UK distributor, Northamber plc, we provide local access and support for our channel partners. The platform features a multi-tenant console with robust RBAC and MFA, full automation via API/CLI, and detailed reporting to simplify management. Fast onboarding means partners can bring new clients online in under 24 hours, accelerating time-to-revenue and improving UK content delivery for their customers.

This predictable-by-design approach empowers our UK partners to build thriving, resilient businesses.

FAQ

How can I migrate my data without affecting my current API performance?

The key is choosing a cloud storage provider with 100% S3 API compatibility. This ensures all your existing applications, scripts, and management tools work without any code changes. A fully compatible provider supports advanced features like versioning and lifecycle policies, preventing performance degradation and ensuring a seamless transition.



What is 'Always-Hot' storage and how does it benefit API speed?

Always-Hot storage means all your data is instantly accessible, all the time. This contrasts with tiered models where data in 'cold' or 'archive' tiers must be restored before access, causing significant delays and API timeouts. An always-hot model guarantees consistent, low-latency performance for all API requests, which is critical for backup, recovery, and dynamic applications.



Are there any hidden costs I should be aware of?

Our pricing model is transparent and predictable by design. We have no egress fees, no API call costs, and no minimum storage durations. Your bill is based solely on the amount of data you store, eliminating the surprise charges that are common with other cloud providers.



How does your platform help with ransomware protection?

We provide Immutable Storage using S3 Object Lock. This feature allows you to make your data unchangeable and undeletable for a specified period. It provides a critical defense against ransomware, as encrypted or deleted files can be restored from an immutable backup copy, ensuring business continuity.



I am an MSP in the UK. How can I partner with you?

We work with UK partners through our distributor, Northamber plc. Our partner program offers predictable margins thanks to our zero-egress-fee model, a multi-tenant management console for easy client administration, and full automation via API/CLI. Contact us to learn more about becoming a partner.



How does your service ensure compliance with regulations like NIS-2?

Our service helps you meet NIS-2 requirements through multiple features. We operate exclusively in certified EU data centers, supporting supply chain security. Our platform includes robust security controls like multi-layer encryption, IAM with MFA/RBAC, and immutable storage (Object Lock) to protect critical data and ensure operational resilience.



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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.