Azure Blob Storage supports SFTP, but the native endpoint comes with an always-on hourly charge of roughly $220 per month per storage account, and it does not include scheduling, OpenPGP file encryption, or a transfer-level audit trail. For organizations running recurring, regulated, or cross-system file transfers, a managed file transfer solution removes the always-on cost and adds the compliance and automation layer that native Azure SFTP cannot provide.
Does Azure Blob Storage Support SFTP?
Microsoft introduced a native SFTP endpoint for Azure Blob Storage in 2022. It allows external clients to connect to a Blob container using the SFTP protocol without requiring a separately managed server. For a simple, point-to-point SFTP handoff into or out of a single storage account, it works, but with limitations that become evident as your file transfer needs grow:
- Endpoint cost is approximately $0.30 per hour per storage account, whether or not it is used to execute a single transfer
- Authentication is limited to local users only, with no Entra ID or Azure Active Directory integration
- No built-in scheduler for recurring or event-triggered file transfers
- No automated OpenPGP file encryption
- No exportable transfer-level audit trail for compliance reporting
For organizations subject to HIPAA, GDPR, PCI DSS, GLBA, SOX, or other security or privacy regulations, those gaps increase the risk of costly compliance violations or data breaches.
Azure Blob Storage supports SFTP, but the native endpoint comes with an always-on hourly charge of roughly $220 per month per storage account, and it does not include scheduling, OpenPGP file encryption, or a transfer-level audit trail. For organizations running recurring, regulated, or cross-system file transfers, a managed file transfer solution removes the always-on cost and adds the compliance and automation layer that native Azure SFTP cannot provide.
Does Azure Blob Storage Support SFTP?
Microsoft introduced a native SFTP endpoint for Azure Blob Storage in 2022. It allows external clients to connect to a Blob container using the SFTP protocol without requiring a separately managed server. For a simple, point-to-point SFTP handoff into or out of a single storage account, it works, but with limitations that become evident as your file transfer needs grow:
- Endpoint cost is approximately $0.30 per hour per storage account, whether or not it is used to execute a single transfer
- Authentication is limited to local users only, with no Entra ID or Azure Active Directory integration
- No built-in scheduler for recurring or event-triggered file transfers
- No automated OpenPGP file encryption
- No exportable transfer-level audit trail for compliance reporting
For organizations subject to HIPAA, GDPR, PCI DSS, GLBA, SOX, or other security or privacy regulations, those gaps increase the risk of costly compliance violations or data breaches.
SFTP to Azure Blob Storage: Four Approaches Compared
When evaluating how to move files to Azure Blob Storage over SFTP, there are four common paths. Each is fine for its intended job. The question is which holds up when transfers become recurring, regulated, or cross-system.
1. Native Azure Blob SFTP Endpoint
- What it is: Microsoft’s built-in SFTP endpoint, enabled at the storage account level.
- Good for: A simple, inbound SFTP handoff from a single trading partner into one storage account, where scheduling, encryption, and auditing are not required.
- Breaks when: The always-on charge accumulates across multiple storage accounts, compliance requires OpenPGP file encryption and a documented audit trail, or transfers need to run on a schedule with automatic retry and failure alerting.
2. SFTP Front-End Service (such as Couchdrop)
- What it is: A hosted service that puts an SFTP front door in front of Azure Blob Storage, so trading partners connect over SFTP without the native endpoint running.
- Good for: Solving inbound partner SFTP access without paying for the native endpoint.
- Breaks when: You need scheduled, cross-cloud automation, OpenPGP encryption applied to every file, or one unified audit trail spanning Azure Blob, AWS S3, and on-premises systems. A front-end service is an access layer, not a transfer control plane.
3. Self-Managed VM SFTP Server
- What it is: A Linux virtual machine running an SFTP server in front of Blob Storage. This is often the first approach tried after seeing the native endpoint bill.
- Good for: Reducing SFTP endpoint cost if the VM is small and well managed.
- Breaks when: The team owns patching, hardening, SSH key management, uptime, and the audit trail management, resulting in higher overall costs (and lost productivity) than original endpoint fee. Manual effort also increases security risk.
4. Custom Scripts (AzCopy, Azure SDK, or PowerShell)
- What it is: Developer-written scripts that push and pull blobs using AzCopy or the Azure SDK.
- Good for: A one-off migration or integration where a development team has the time to build and maintain the solution.
- Breaks when: Error handling, retries, encryption, key rotation, logging, and every SDK change become the internal team’s permanent responsibility. This is the brittle-script problem that managed file transfer exists to solve.
The True Cost of Azure Blob Native SFTP vs. Diplomat MFT
This is where the business case for managed file transfer becomes concrete. The native Azure SFTP endpoint is not a flat fee billed by transfer volume. It is an always-on hourly charge applied to every storage account where the endpoint is enabled, regardless of how many files actually move.
Native Azure SFTP Endpoint Cost Breakdown
| Storage Accounts with SFTP Enabled | Approximate Monthly Cost |
|---|---|
| 1account | ~$220per month |
| 2accounts | ~$440per month |
| 3accounts | ~$660per month |
| 5accounts | ~$1,100per month |
This cost accumulates before a single file is transferred and before any scheduling, encryption, or auditing capability is added. It is a fixed overhead that scales with the number of storage accounts, not with the value delivered.
Diplomat MFT: What You Get Instead
Diplomat MFT from Coviant Software replaces the always-on native SFTP endpoint with a purpose-built, self-hosted managed file transfer engine. Pricing is straightforward, with no per-transfer charges, no multi-year lock-ins, and no hidden or surprise fees.
| Edition | Annual Price | Monthly Equivalent | Azure Blob Capability |
|---|---|---|---|
| Standard | $3,999per year | $335per month | SFTP client connects to Azure. 25 automated workflows, full audit trail, OpenPGP encryption |
| Professional | $8,499per year | $710per month | Includes 1 direct Azure Blob Cloud Storage Connector. 100 automated workflows, 25 SFTP accounts, synchronization, calendaring |
| Enterprise | $12,999per year | $1,085per month | 5 Cloud Storage Connectors. Unlimited admin accounts, 24x7 critical outage response |
The value comparison in practice: An organization running Azure SFTP across three storage accounts pays approximately $660 per month for an always-on endpoint with no scheduling, no OpenPGP, and no audit trail. Diplomat MFT Professional at $710 per month provides a direct Azure Blob connector, 100 automated transfer workflows, OpenPGP encryption on every transfer, a full exportable audit log, and connectivity to AWS S3, SharePoint, and on-premises systems from a single control plane. The cost difference is $50 per month. The capability difference is substantial.
For organizations at the Standard tier, the $335 per month investment covers 25 automated workflows, SFTP connectivity to Azure Blob and external trading partners, OpenPGP encryption, and a full audit trail. That is more than twice the capability of a single always-on native endpoint at a comparable price point.
Learn More: See Diplomat MFT Pricing and Azure Blob Transfer Features
How Diplomat MFT Automates SFTP Transfers to Azure Blob Storage
Diplomat MFT operates as a single, governed transfer engine between Azure Blob Storage and every other system in the information supply chain, including SFTP servers, AWS S3, SharePoint, and on-premises file stores.
Setup in Four Steps
Step 1: Connect Azure Blob Storage. Configure Diplomat MFT to access Azure Blob Storage containers directly. The Professional and Enterprise editions include a Cloud Storage Connector that handles authentication and connectivity without custom scripting.
Step 2: Define access control policies. Set user roles and permissions within Diplomat MFT. External trading partners receive unique SFTP credentials scoped to the files and directories they are authorized to access. LDAP integration keeps identity management consistent with your existing directory.
Step 3: Build automated transfer workflows. Schedule transfers on any cadence, hourly, daily, event-triggered, or calendar-based, such as end-of-quarter financial report exports or real-time HR file updates. Up to 25 workflows on Standard, up to 100 on Professional.
Step 4: Let the automation run. Diplomat MFT handles OpenPGP encryption, audit logging, user authentication, and real-time monitoring automatically. Any transfer failure or unauthorized access attempt triggers an immediate alert. No developer is needed to keep the workflow running.
What Diplomat MFT Adds That Native Azure SFTP Cannot
| Capability | Native Azure SFTP | Couchdrop | Diplomat MFT |
|---|---|---|---|
| Inbound SFTP from trading partners | Yes | Yes | Yes |
| Outbound SFTP to external servers | No | Yes | Yes |
| Scheduled recurring transfers | No | Yes | Yes |
| Automatic OpenPGP file encryption | No | No | Yes |
| Compliance audit trail (exportable) | No | No | Yes |
| LDAP / Entra ID integration | No | No | Yes |
| Multi-cloud (S3, SharePoint, on-prem) | No | Yes25+ connectors | Yes |
| No-code workflow configuration | No | Partial | Yes |
| Security record | Not applicable | Not stated | 0 CVEs in 20+ years |
| Self-hosted on your infrastructure | No | Nocloud-hosted | Yes |
Compliance Frameworks That Require More Than Native SFTP
For organizations in regulated industries, SFTP channel encryption alone does not meet the full requirements of the applicable standards. The table below maps each regulation to the specific capability gaps in the native Azure SFTP endpoint.
Diplomat MFT addresses each of these gaps out of the box, with automatic OpenPGP encryption, a full exportable audit trail, LDAP-integrated access control, and one-click compliance reporting backed by a security architecture with zero CVEs in over 20 years of deployment.
Next Steps
If your Azure Blob file transfers are recurring, regulated, or connecting to external SFTP servers or other cloud systems, the native Azure SFTP endpoint was not designed for that workload. Diplomat MFT was.
For roughly the same cost as keeping the native endpoint running across two or three storage accounts, Diplomat MFT Professional delivers a governed, automated, encrypted transfer engine with full audit reporting and zero CVEs in over 20 years of deployment.
Learn More: Automate Secure SFTP Transfers to Azure Blob Storage with Diplomat MFT
Ready to see it running against your specific workflow? Book an Azure Blob transfer demo and see Diplomat MFT connect, encrypt, and audit a live transfer end to end.
| Regulation | Requirement | Native Azure SFTP Gap |
|---|---|---|
| HIPAA | PHI must be encrypted in transit and at rest; access and transfer events must be logged |
|
| GDPR | Personal data must be protected with appropriate technical safeguards during transfer and access must be documented |
|
| PCI DSS | Cardholder data must be encrypted over open networks; access to systems must be controlled and audited |
|
| GLBA | Financial institutions must safeguard customer data throughout its lifecycle including during transfer |
|
| SOX | Financial data integrity must be maintained; access and movement must be auditable |
|
| CMMC | Controlled Unclassified Information (CUI) requires encryption in transit and at rest, plus detailed access logging |
|
Diplomat MFT addresses each of these gaps out of the box, with automatic OpenPGP encryption, a full exportable audit trail, LDAP-integrated access control, and one-click compliance reporting backed by a security architecture with zero CVEs in over 20 years of deployment.
Next Steps
If your Azure Blob file transfers are recurring, regulated, or connecting to external SFTP servers or other cloud systems, the native Azure SFTP endpoint was not designed for that workload. Diplomat MFT was.
For roughly the same cost as keeping the native endpoint running across two or three storage accounts, Diplomat MFT Professional delivers a governed, automated, encrypted transfer engine with full audit reporting and zero CVEs in over 20 years of deployment.
Learn More: Automate Secure SFTP Transfers to Azure Blob Storage with Diplomat MFT
Ready to see it running against your specific workflow? Book an Azure Blob transfer demo and see Diplomat MFT connect, encrypt, and audit a live transfer end to end.
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Frequently Asked Questions
Does Azure Blob Storage have a built-in SFTP server?
Yes. Microsoft introduced a native SFTP endpoint for Azure Blob Storage in 2022. It allows external clients to connect over SFTP to a Blob container. The endpoint is billed at approximately $0.30 per hour per storage account, whether or not any transfers occur, totaling roughly $220 per month per account on an always-on basis.
How do I transfer files from an SFTP server to Azure Blob Storage?
The four main options are: the native Azure Blob SFTP endpoint, a hosted SFTP front-end service, a self-managed VM SFTP server, or a managed file transfer solution such as Diplomat MFT. For recurring, regulated, or cross-system transfers, Diplomat MFT provides scheduling, OpenPGP encryption, audit logging, and multi-cloud connectivity from a single platform without the always-on cost of the native endpoint.
Is the Azure Blob native SFTP endpoint worth the cost?
For a simple, inbound SFTP handoff from one trading partner into one storage account, the native endpoint is a reasonable option. For organizations with multiple storage accounts, compliance requirements, or complex transfer workflows, the always-on cost accumulates quickly and the capability gaps, no scheduling, no OpenPGP, no audit trail, become significant. At three storage accounts, the always-on native SFTP cost approaches $660 per month with none of the enterprise features included in Diplomat MFT Professional at $710 per month.
What is the difference between SFTP and OpenPGP for Azure Blob transfers?
SFTP encrypts the transport channel between the sender and Azure Blob Storage. Once the file arrives, the channel encryption ends. OpenPGP encrypts the file itself, so it remains protected at rest and after delivery. Both layers are needed for full compliance with HIPAA, GDPR, PCI DSS, and similar regulations. The native Azure SFTP endpoint provides channel encryption only. Diplomat MFT applies both automatically.
Can Diplomat MFT replace the native Azure SFTP endpoint entirely?
Yes. Diplomat MFT connects directly to Azure Blob Storage through its built-in Cloud Storage Connector, available on the Professional and Enterprise editions, eliminating the need to enable the native SFTP endpoint and its always-on charge. It handles inbound SFTP from trading partners, outbound transfers to Azure Blob, and cross-cloud workflows to AWS S3, SharePoint, and on-premises systems from one platform.
Which Diplomat MFT edition is right for Azure Blob file transfers?
Standard at $3,999 per year covers organizations getting started with up to 25 automated SFTP workflows and full encryption and audit capabilities. Professional at $8,499 per year includes the direct Azure Blob Cloud Storage Connector, 100 automated workflows, and multi-admin access. Enterprise at $12,999 per year suits large organizations with five cloud storage connectors, unlimited administrators, and 24×7 critical outage response.
How Diplomat MFT Compares to Couchdrop for Azure Blob SFTP
Couchdrop is the most commonly cited alternative when organizations search for a way to avoid the native Azure Blob SFTP endpoint cost. It operates as a hosted SFTP front door placed in front of Azure Blob Storage, allowing trading partners to connect over SFTP without enabling the native endpoint. For simple inbound SFTP access, this is a workable approach.
The distinction between a front-door service and a transfer control plane matters when requirements grow beyond basic inbound access.
| Capability | Native Azure SFTP | Couchdrop | Diplomat MFT |
|---|---|---|---|
| Inbound SFTP from trading partners | Yes | Yes | Yes |
| Outbound SFTP to external servers | No | Yes | Yes |
| Scheduled recurring transfers | No | Yes | Yes |
| Automatic OpenPGP file encryption | No | No | Yes |
| Compliance audit trail (exportable) | No | No | Yes |
| LDAP / Entra ID integration | No | No | Yes |
| Multi-cloud (S3, SharePoint, on-prem) | No | Yes25+ connectors | Yes |
| No-code workflow configuration | No | Partial | Yes |
| Security record | Not applicable | Not stated | 0 CVEs in 20+ years |
| Self-hosted on your infrastructure | No | Nocloud-hosted | Yes |
For organizations that need inbound SFTP access to Azure Blob with multi-cloud flexibility, Couchdrop fills a real gap. For organizations that need outbound transfers, OpenPGP encryption on every file, a compliance-grade audit trail, and a self-hosted deployment where data stays on their own infrastructure, Diplomat MFT is the appropriate tool.
Couchdrop is a cloud-hosted service, meaning files pass through a third-party platform. For regulated industries including healthcare, financial services, and government, this creates a data residency and custody question that a self-hosted MFT deployment does not.