Top 10 HIPAA-Compliant Cloud Storage Solutions for Healthcare Practices (2026)

Cloud storage is no longer optional for independent healthcare practices. Imaging, intake documents, lab results, signed consents, and backup archives all flow through one or more cloud platforms. HIPAA's Security Rule treats every one of them as a Business Associate the moment they receive PHI.

The bar is two things: a signed BAA, and configuration that actually protects the data. Below are the ten providers most commonly used by independent practices, ranked by fit, with the configuration traps each one creates.

1. AWS S3 (HIPAA-eligible)

Amazon Web Services signs a Business Associate Addendum through AWS Artifact, covering S3 and 100+ other HIPAA-eligible services. Patient Protect runs on AWS, including S3 for object storage.

Best for: Practices with technical resources, custom application backends, or HIPAA-compliant integrations with healthtech vendors that build on AWS.

Configuration trap: Default S3 buckets are private, but public-access-block tenant settings must be enabled. Server-side encryption (SSE-S3 or SSE-KMS) should be required by bucket policy, not assumed.

2. Microsoft OneDrive for Business (via Microsoft 365 BAA)

Covered under the Microsoft 365 BAA on Business Basic, Standard, Premium, and any Enterprise tier. Includes 1 TB per user. Personal OneDrive accounts and Microsoft 365 Family never qualify.

Best for: Practices already standardized on Microsoft 365 for email, Teams, and Office. Single BAA covers the whole stack.

Configuration trap: Anonymous link sharing is enabled by default. Sync to personal Microsoft accounts is allowed by default. DLP for PHI patterns isn't configured by default. The BAA is the floor; admin lockdown is the work. Full detail at our OneDrive HIPAA guide.

3. Google Drive (via Google Workspace BAA)

Google signs BAAs covering Drive on Workspace Business Starter and above. Free Google accounts and personal Gmail never qualify. See our Google Workspace HIPAA breakdown for the full picture.

Best for: Practices on Google Workspace for email and collaboration, integrating Drive for documents and intake.

Configuration trap: Workspace admin settings allow file sharing to anyone with the link by default. Vault, DLP, and Context-Aware Access controls need to be configured to enforce minimum-necessary access.

4. Box (Business and Enterprise)

Box signs BAAs on Business and Enterprise plans. The product was built around enterprise content management with regulatory compliance as a primary design driver.

Best for: Practices that need strong granular access controls, watermarking, retention policies, and integration with EHR/PM platforms.

Configuration trap: Box Shield (the advanced threat detection layer) and Box KeySafe (customer-managed encryption keys) are paid add-ons, not defaults. The base BAA covers Box's role, not the optional security layers.

5. Dropbox Business / Enterprise

Dropbox signs BAAs on Business Standard, Business Advanced, and Enterprise plans. Free, Plus, and Family plans do not qualify and cannot be made HIPAA-compatible.

Best for: Smaller practices that need straightforward sync-and-share without the complexity of an enterprise content platform.

Configuration trap: Admin uses the right plan; staff sync to a Personal Dropbox account on the same device. One wrong-account sync of ePHI is a reportable event. See our full Dropbox guide.

6. Azure Blob Storage (Microsoft Azure)

Azure offers HIPAA-eligible Blob Storage under the Microsoft Online Services BAA. Functionally parallel to AWS S3 for object storage, with deep integration into the Azure stack.

Best for: Practices running on Microsoft infrastructure who want object storage alongside Azure compute, databases, and identity (Entra ID).

Configuration trap: Customer-managed keys (CMK) and immutable storage policies are configurable but not default. Logging via Azure Monitor needs to be enabled per storage account.

7. Google Cloud Storage

Google Cloud Platform signs BAAs covering Cloud Storage on appropriate enterprise contracts. Distinct from Google Drive (which is Workspace-based).

Best for: Practices building custom applications or analytics workloads on GCP, with object storage alongside BigQuery, Pub/Sub, and other data services.

Configuration trap: Public-access prevention is opt-in. Object versioning, retention locks, and audit logs must be enabled per bucket.

8. Wasabi (Hot Cloud Storage)

Wasabi offers HIPAA-eligible storage with a BAA on enterprise accounts. Positioned as cost-effective object storage with predictable pricing.

Best for: Backup and archival workloads where storage volume matters more than integrated app services. Common pairing: Wasabi for backups plus AWS/Azure for primary storage.

Configuration trap: Wasabi's S3-compatible API makes it easy to integrate, but encryption-at-rest configuration, immutability, and IAM policies still need to be set per bucket.

9. Sookasa (HIPAA-Specific Encryption Layer)

Sookasa specifically targets HIPAA workloads, layering encryption and access controls on top of consumer cloud storage (Dropbox, Google Drive) to make those underlying platforms HIPAA-eligible.

Best for: Practices already using consumer Dropbox or Google Drive for non-PHI and looking to extend a HIPAA-compliant layer on top without changing the user experience entirely.

Configuration trap: Sookasa's protection ends at the file boundary. PHI in shared links, metadata, or comments outside Sookasa's encrypted vault isn't covered.

10. pCloud Business

pCloud Business signs BAAs on appropriate plans. Less widely deployed in healthcare than Google or Microsoft, but offers strong client-side encryption (pCloud Crypto) as a paid add-on.

Best for: Practices that want a simpler alternative to the enterprise giants, particularly those prioritizing zero-knowledge encryption.

Configuration trap: Standard pCloud Business doesn't include zero-knowledge encryption by default. The pCloud Crypto add-on is required for that protection. Verify scope before contracting.

How to choose between them

The HIPAA-eligibility question is the floor. Above the floor, three dimensions matter:

• Stack integration. Practices already on Microsoft 365 should default to OneDrive. Practices on Google Workspace should default to Drive. Adding a separate provider increases BAA surface and configuration burden.
• Access control granularity. Box is built for fine-grained content governance. Dropbox is built for sync-and-share. Choose based on whether your PHI risk profile requires the former.
• Audit log retention. All providers offer audit logging at some tier; the differences are in retention duration and export format. HIPAA's six-year documentation rule should drive the requirement.

Where Patient Protect fits

None of the providers above are Patient Protect competitors — they're storage layers. Patient Protect is the compliance program over the storage layer: tracking your BAA with the cloud provider, monitoring access logs, surfacing configuration drift, and managing the workforce policies governing what data flows where.

Most documentation-focused compliance platforms cover the policy side of cloud storage relationships. Patient Protect approaches it differently: continuous monitoring of the cloud configurations themselves, with active alerts when default settings drift away from your documented policies. The two layers complement each other. Most practices need both.

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Patient Protect tracks every cloud provider in your stack — BAAs, configuration drift, access logs, and workforce training — starting at $39/month. Free ePHI Data Flow Mapper inventories where your patient data actually lives, no account required.