5 GDPR-Friendly S3 Storage Providers in 2026

First, the obvious caveat: no storage provider makes your app GDPR-compliant by itself.

You still need a lawful basis, retention rules, deletion workflows, contracts, access controls, security processes, and some adult supervision. Very annoying, very necessary.

But provider choice helps. If you want S3-compatible storage and care about GDPR, you probably want European regions, clear data processing terms, access controls, and a provider that understands European customers.

Here are five GDPR-friendly S3 storage providers to compare in 2026.

What GDPR-friendly means here

In this post, GDPR-friendly means the provider has a practical fit for European data protection needs.

I looked for:

• S3-compatible API
• German or European regions
• European company or strong European presence
• Access controls
• Versioning or object locking where relevant
• Clear public product/legal positioning
• Good fit for app uploads and backups

This is not legal advice. It is an infrastructure shortlist.

Quick comparison

1. Sliplane Object Storage

Sliplane Object Storage is a strong fit if you want S3-compatible storage from a German company.

Sliplane is headquartered in Berlin and offers Object Storage in Germany. A DPA is available through the dashboard, and the storage product supports scoped access keys, versioning, and object locking.

Pricing is also simple: 5 EUR per 250 GB per month, excluding tax. No egress fees, no ingress fees, and no request fees.

Sliplane does not charge per bucket, so splitting uploads, backups, staging assets, and customer files into separate buckets does not change the bill.

Use Sliplane if:

• You want German S3-compatible storage.
• You want a German company and DPA.
• You store user uploads, exports, backups, or generated files.
• You want no egress or request fees.

Skip it if:

• You need a hyperscaler compliance catalog.
• You need many storage regions.
• You need advanced archival storage classes.

2. Hetzner Object Storage

Hetzner Object Storage is a natural GDPR-friendly S3 option for many German developers.

Hetzner positions the product as GDPR-compliant and S3-compatible. It offers German and Finnish locations and includes features like object locking, versioning, pre-signed URLs, and server-side encryption.

As of July 2026, Hetzner pricing starts at 6.49 EUR/month, excluding VAT, including 1 TB of storage and 1 TB of egress. Extra storage is listed at 8.70 EUR/TB-month, extra egress at 1 EUR/TB, and Hetzner lists ingress, internal eu-central traffic, and S3 API calls as free.

The caveat in 2026 is availability under load. On July 2, 2026, Hetzner's status page showed degraded Object Storage in multiple locations and an ongoing note that high Object Storage traffic may lead to timeouts. The durability and feature set can still make sense for backups or Hetzner-local workflows, but I would not make it the first choice for availability-sensitive app paths right now.

Use Hetzner if:

• You already use Hetzner.
• You want a German provider.
• You want German/Finnish storage locations.

Skip it if:

• You want storage built into an app platform.
• You want no per-bucket fees, egress fees, or request fees.
• You do not already use Hetzner infrastructure.

3. IONOS Cloud Object Storage

IONOS Cloud Object Storage is another German S3-compatible option.

IONOS is a large German provider, which can make procurement and vendor review easier for some companies. Its pricing page lists free API operations and per-GB storage pricing, with separate traffic rules.

Use IONOS if:

• You want a large German cloud provider.
• Your company already works with IONOS.
• Procurement matters.

Skip it if:

• You want the simplest developer workflow.
• You want no egress fees.
• You do not want to analyze traffic pricing.

4. Scaleway Object Storage

Scaleway Object Storage is a French/EU provider with strong European positioning.

It supports S3-compatible clients, object lock, versioning, encryption options, and multiple storage classes. It is a better fit when your GDPR requirement is EU-focused rather than Germany-specific.

Use Scaleway if:

• You want a French/EU cloud provider.
• You need storage classes.
• You care about European sovereignty positioning.

Skip it if:

• You need German storage.
• You want no egress fees.
• You want simple app-storage pricing.

5. Exoscale Object Storage

Exoscale Object Storage offers S3-compatible storage with European zones including Switzerland, Germany, Austria, Bulgaria, and Croatia.

That makes it useful for teams that care about European data residency and want to avoid the largest hyperscalers.

Use Exoscale if:

• You want European zones.
• You care about GDPR-friendly infrastructure.
• You want a smaller European cloud provider.

Skip it if:

• You want no egress fees.
• You want storage directly inside your app platform.
• You specifically need a German company.

Which GDPR-friendly S3 provider should you choose?

Conclusion

GDPR-friendly S3 storage is about reducing friction, not outsourcing responsibility.

Pick a provider with the right regions, contracts, access controls, pricing, and operational fit. Then still do the boring compliance work.

If you want S3-compatible storage in Germany from a German company, with scoped access keys, object locking, versioning, and no egress or request fees, Sliplane Object Storage is the straightforward choice.