The main European alternatives to Amazon S3 for Salesforce document storage are OVHcloud Object Storage, Hetzner Object Storage, Scaleway Object Storage, IONOS Object Storage, and Exoscale Object Storage. All of these are S3-compatible, meaning they work with the same APIs and tools you already use with Amazon S3. The key advantage is that they store your data exclusively within the European Union, which makes GDPR compliance significantly more straightforward. Below, we break down what each option offers, how they connect to Salesforce, and what to check before you make the switch.
Data residency matters for Salesforce document storage because GDPR requires that personal data belonging to EU residents be stored and processed in ways that meet European data protection standards. When your documents live on servers outside the EU, you take on additional legal obligations, compliance risk, and potential liability. For document-intensive teams, this is not a minor detail.
Amazon S3 is based in the United States, and while AWS does offer EU-based regions, data can still be subject to US law under frameworks like the CLOUD Act. This creates uncertainty for European businesses that handle sensitive contracts, client records, or regulated content. Choosing a European cloud storage provider removes much of that ambiguity because the data never leaves EU jurisdiction.
Beyond legal compliance, data residency also affects performance. Storing documents on servers physically closer to your team typically means faster retrieval times, which matters a lot when your operations depend on quick access to files inside Salesforce.
The main European alternatives to Amazon S3 for Salesforce document storage are providers that offer S3-compatible object storage hosted entirely within the EU. Here is a practical overview of the most widely used options in 2026:
All of these providers support S3-compatible APIs, which means the technical integration path into Salesforce is similar regardless of which one you choose. Pricing is generally lower than Amazon S3 for comparable storage volumes, with most providers charging per gigabyte stored plus egress fees.
European S3-compatible storage providers connect to Salesforce primarily through Salesforce Files Connect, custom Apex integrations, or third-party document management apps available on the Salesforce AppExchange. Because these providers use the same S3 API standard as Amazon, the integration approach is largely identical to what you would use with AWS.
The most common connection method involves configuring an external data source in Salesforce that points to your European storage bucket. You provide the endpoint URL specific to your provider, along with access credentials, and Salesforce treats that storage as an external file repository. From there, files can be linked to records, shared across teams, and accessed directly from within Salesforce without leaving the platform.
For teams that need more control over document workflows, such as automated filing, version control, or metadata tagging, a dedicated document management layer on top of the raw storage connection is usually the better path. Raw S3 connectivity gives you a storage bucket, not a document management system.
Self-hosted European cloud storage means you provision and manage your own storage infrastructure on a European cloud provider, while managed cloud storage means a third-party provider handles the infrastructure, maintenance, security, and compliance on your behalf. The right choice depends on your team’s technical resources and risk tolerance.
With self-hosted storage on providers like OVHcloud or Hetzner, you control the configuration, access policies, and cost structure directly. This gives you maximum flexibility and often the lowest cost per gigabyte. The tradeoff is that your team is responsible for security hardening, backup strategies, uptime monitoring, and keeping the integration with Salesforce functional as both platforms evolve. This approach suits teams with dedicated IT or DevOps resources.
Managed European cloud storage, offered by providers like IONOS or through enterprise-tier plans from Scaleway or OVHcloud, includes support, SLA guarantees, and often built-in compliance tooling. You pay more per gigabyte, but you reduce operational overhead significantly. For operations managers who need reliable document access without managing infrastructure, managed storage is usually the more practical choice.
For document-intensive Salesforce teams, the best European storage option is one that combines S3 compatibility, strong EU data residency guarantees, reliable uptime, and a pricing model that scales with document volume. IONOS and OVHcloud are consistently strong choices for operational teams that handle high volumes of contracts, project files, or transactional records.
That said, raw storage alone is rarely enough for teams dealing with real document complexity. The storage provider handles where your files live. It does not handle how documents are organized, retrieved, versioned, or connected to the right Salesforce records. Teams that rely on quick access to the right file at the right moment, such as a contract linked to an account or a media asset tied to a campaign, need a document workflow layer on top of their storage. You can learn more about how that works through our Document Value Management model.
Before migrating from Amazon S3 to a European alternative for Salesforce document storage, you should verify data residency guarantees, API compatibility, egress costs, existing Salesforce integration dependencies, and your migration timeline. Skipping any of these checks can lead to compliance gaps, broken integrations, or unexpected costs.
Here is a practical pre-migration checklist:
Choosing the right European storage provider is only part of the equation. The bigger challenge for most operational teams is making documents actually usable inside Salesforce, organized, searchable, version-controlled, and connected to the right records automatically. That is exactly what we built Cartularius to do.
Cartularius sits on top of your chosen storage infrastructure and turns it into a fully functional document management system inside Salesforce. Here is what that means in practice:
Whether you are migrating from Amazon S3 to a European alternative or starting fresh, we help you build a document workflow that actually works for your team. Explore our pricing options to see what fits your setup, or take a closer look at the full feature set to understand what is possible.
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