CloudSigma vs Impossible Cloud (2026): Pricing, Features & Verdict
CloudSigma is our pick, scoring 6.5/10 against 6/10 for Impossible Cloud on our AI Software criteria. Its biggest advantage: higher Customization score (9/10 vs 4/10). Only Impossible Cloud has a free plan.
Last updated: November 2026
CloudSigma
6.5/10
CloudSigma is a white-label sovereign IaaS platform that telcos, MSPs and datacenter operators resell as branded cloud, GPU and AI services.
Impossible Cloud
6/10
Hamburg-based provider of S3-compatible object storage with no egress or API fees, plus bare metal GPU servers and managed AI inference hosted in Europe.
Feature-by-Feature Comparison
| Feature | | |
|---|---|---|
| Scores | ||
| Overall Rating | 6.5/10 | 6/10 |
| Integration | 6/10 | 6/10 |
| Analytics | 5/10 | 3/10 |
| Customization | 9/10 | 4/10 |
| Ease of Use | 5/10 | 7/10 |
| Support | 6/10 | 6/10 |
| Cost | 6/10 | 8/10 |
| Scalability | 7/10 | 6/10 |
| Security | 8/10 | 7/10 |
| Pricing | ||
| Free plan | No | Yes |
| Cheapest paid plan | Contact for pricing | €7.99/mo Pay-as-you-go Storage |
| Estimated cost for 10 users | Contact for pricing | Free Free Trial |
| Features | ||
| API and CLI | ||
| Multiple Regions | ||
| DDoS Protection | Not listed | |
| Object Storage | ||
| VPS Hosting | Not listed | |
| Cloud Compute | Not listed | |
| Automatic Backups | Not listed | |
| Dedicated Servers | Not listed | |
CloudSigma vs Impossible Cloud cost by team size
| Team size | CloudSigma | Impossible Cloud |
|---|---|---|
| 1 user | Contact for pricing | FreeFree Trial |
| 5 users | Contact for pricing | FreeFree Trial |
| 10 users | Contact for pricing | FreeFree Trial |
| 25 users | Contact for pricing | FreeFree Trial |
| 50 users | Contact for pricing | FreeFree Trial |
The plan that fits each team size, billed monthly, before add-ons and usage charges. Each cost opens that tool's pricing calculator for the team size.
Who CloudSigma and Impossible Cloud suit
Impossible Cloud fits small business better than CloudSigma.
| Audience | CloudSigma | Impossible Cloud |
|---|---|---|
| Small Business | 3/10There are no public prices, and sales now centre on partners and resellers. | 7/10Flat 7.99 EUR per TB pricing with no egress fees and a 5 TB free trial suits small firms that need simple offsite storage. |
| IT Teams | 7/10The platform offers configurable IaaS with root access, API automation and Terraform support. | 8/10Built-in integrations with Veeam, Acronis, NAKIVO and similar backup tools, plus immutable Object Lock, make it a natural offsite backup target for IT teams. |
| Developers | 6/10It is API-first with Terraform and Ansible support and resources that can be sized freely. | 6/10Offers an S3 API, IAM and STS endpoints and an OpenAI-compatible inference API, but no public buckets and no general-purpose compute. |
| Enterprise | 6/10It suits sovereign data residency and certification needs, though it has less enterprise proof than the hyperscalers. | 6/10Offers reserved multi-year capacity, named account managers and EU data residency, but its track record and published SLA terms are limited. |
| Government | 6/10CloudSigma lists government IT among the users of its sovereign, in-country cloud. | 6/10European jurisdiction, country-level region choice and GDPR positioning appeal to public-sector buyers who need data sovereignty. |
| Agencies | Not rated | 6/10Reviews from MSPs say the predictable per-TB pricing protects their margins, and the product is sold through a partner and reseller network. |
Which One Should You Choose?
Why choose CloudSigma
- Higher Customization score (9/10 vs 4/10)
- Higher Analytics score (5/10 vs 3/10)
Why choose Impossible Cloud
- Has a free plan (CloudSigma does not)
- Higher Ease of Use score (7/10 vs 5/10)
- Higher Cost score (8/10 vs 6/10)
- Better fit for small business (7/10 vs 3/10)
Pros & Cons
CloudSigma
Pros
- CPU, RAM and storage are sized independently rather than in fixed instance types.
- Per-second metering in five-minute billing segments avoids paying for idle hourly blocks.
- A wide certification list covers ISO 27001, 27017 and 27018, SOC 2 and PCI-DSS.
- The white-label model lets telcos and MSPs launch branded cloud services on revenue share, with no licence fees.
- Terraform, Ansible and a REST API with pricing and billing endpoints support automation.
Cons
- No public list prices, so costs require a pricing call.
- Burst usage is charged at higher rates than subscription capacity, which makes bills harder to predict.
- The public review footprint is small, and many reviews are years old.
- The network uptime guarantee does not cover applications, per RFP.wiki.
- Some users report friction during setup and support in edge cases.
Impossible Cloud
Pros
- Flat 7.99 EUR per TB price with no egress or API request fees makes storage bills predictable for backup and restore-heavy workloads.
- Storage regions in Germany, the Netherlands, the UK, France and Denmark, plus New York, let buyers choose the country where their data lives.
- Object Lock (WORM), versioning, RBAC and MFA, together with ISO 27001 certification, cover ransomware-resilient backup requirements.
- Hands-on testers and reviewers describe onboarding, access key creation and bucket setup as very quick.
- Integrates natively with common MSP backup tools such as Veeam, Acronis, NAKIVO, MSP360 and Hornetsecurity.
Cons
- Has only one hot storage class, so long-term archives cost the same as active data.
- Free egress is subject to a fair use policy, and the vendor may step in when egress greatly exceeds stored volume.
- Bucket features are basic. An independent 2026 test found no public bucket option.
- A small number of users report slow, bureaucratic onboarding, including one claim that trial data was deleted after the trial was not converted.
- Review volume is small on G2, Gartner and TrustRadius, and the published pages give no numeric uptime SLA.
Not sold on either?
Frequently Asked Questions
CloudSigma scores higher on our AI Software criteria: 6.5/10 against 6/10 for Impossible Cloud. The largest gap is in Customization: 9/10 for CloudSigma and 4/10 for Impossible Cloud.
Impossible Cloud has a free plan; CloudSigma does not list one.
Impossible Cloud is the better fit for small business: we rate it 7/10 for them, against 3/10 for CloudSigma.
