What is SFTP?
SFTP (SSH File Transfer Protocol) is a network protocol for securely transferring files between computers over an encrypted SSH connection. Despite the similar name, it has no relation to FTP—it was developed independently as part of the SSH protocol suite and operates on port 22.
Both the control channel (commands) and data channel (file contents) are encrypted, making SFTP the standard choice wherever files contain sensitive data: health records, financial reports, customer exports, EDI transactions, and vendor invoices.
Protocol Comparison: SFTP vs FTP vs FTPS vs SCP
| Protocol | Encryption | Port(s) | Auth methods | Firewall-friendly | Best for |
|---|---|---|---|---|---|
| SFTP | SSH (always) | 22 | Password, SSH key | Yes (1 port) | Vendor file drops, compliance |
| FTPS | TLS (on top of FTP) | 21, +data ports | Password, client cert | Partial (passive mode) | Legacy systems needing encryption |
| FTP | None | 21, +data ports | Password (plaintext) | No | Internal networks only |
| SCP | SSH (always) | 22 | SSH key | Yes (1 port) | Server-to-server scripts |
Bottom line: For external file exchange with vendors or partners, SFTP is the safe default. It uses a single port (easy on firewalls), supports both password and SSH-key authentication, and is universally supported by enterprise systems. FTP should never be used over the public internet.
What does "managed" mean?
The word "managed" means the provider handles the operational burden of running the SFTP infrastructure—server provisioning, OS patching, certificate renewal, uptime monitoring, and access control configuration. You interact with a dashboard or API; they run the machines.
The spectrum runs from fully self-hosted (you own everything) to fully managed (the provider owns everything). Most real deployments fall somewhere in between:
Managed vs Self-Hosted: What you're responsible for
| Responsibility | Self-hosted OpenSSH | AWS Transfer Family | Fully managed (Bridglet, SFTP To Go) |
|---|---|---|---|
| Server provisioning | You | Provider | Provider |
| OS patching & updates | You | Provider | Provider |
| Uptime SLA | You | Provider (99.9%) | Provider (99.9%+) |
| Credential management UI | You (sshd config) | Partial (IAM + Lambda) | Provider dashboard |
| Audit logs & retention | You (syslog) | Partial (CloudWatch) | Provider dashboard |
| SSH key / password rotation | You | Partial (Secrets Manager) | Provider dashboard |
| Storage backend | You choose & maintain | S3 or EFS only | Included or BYOS |
AWS Transfer Family occupies a middle ground: Amazon manages the SFTP endpoint and server infrastructure, but you're still responsible for building the password authentication system (requires a Lambda function + Secrets Manager) and navigating IAM policies. Fully managed providers like Bridglet or SFTP To Go abstract all of that into a simple dashboard.
When do you need managed SFTP?
Not every organization needs a managed SFTP service. Here are the scenarios where it makes clear sense:
Vendor or partner file drops
Your logistics partner, payroll processor, or EDI trading partner needs to deliver files to you on a regular schedule. They expect an SFTP endpoint with static credentials. You need zero-downtime delivery and a paper trail. A managed SFTP service handles this without requiring your team to maintain infrastructure.
Compliance requirements (HIPAA, SOC 2, PCI)
Regulated industries require auditable, encrypted file transfer with access logs that demonstrate who transferred what and when. A managed SFTP provider with structured audit logs, BAA availability, and encryption-in-transit satisfies these requirements far more easily than a self-hosted server you patch yourself.
Legacy system integrations
Older ERP systems, mainframes, and enterprise applications often support SFTP as their only file exchange mechanism. If you're integrating with a bank, insurance company, or government system, SFTP is likely the only option on the table. Managed SFTP gives you a stable, long-lived endpoint without devops overhead.
Data pipeline ingestion
Many data teams receive flat-file exports (CSV, XML, JSON) from third-party data vendors via SFTP on a nightly basis. Managed SFTP with event webhooks or S3 sync can feed these files directly into your pipeline without manual intervention.
Agencies managing multiple clients
Marketing agencies, accounting firms, and MSPs that exchange files with many clients need isolated SFTP directories per client, with each client's files completely invisible to the others. Multi-tenant managed SFTP provides per-client credential scoping in a single dashboard.
You probably don't need managed SFTP if: you're transferring files only between your own internal servers (use SCP or S3 directly), or your use case is a one-time migration (use a tool like Cyberduck or FileZilla locally).
What to look for in a provider
Not all managed SFTP services are equal. Use this checklist when evaluating providers:
Uptime SLA
Look for 99.9% or better with a defined SLA and compensation policy. File delivery from partners is often time-sensitive—downtime costs money.
Credential scoping per user
Each vendor or partner should have isolated credentials that only let them see their own directory. Partners cannot see or access each other's files. Ask if directory-level permission scoping is available.
File retention policies
Auto-deletion after N days keeps storage costs predictable and satisfies data minimization requirements. Avoid providers that require manual cleanup.
Transparent, predictable pricing
Watch for egress fees and per-user charges that turn a $15/month plan into a $200 bill. Self-serve pricing pages are a green flag; "contact sales for pricing" is a red flag.
Web dashboard for file browsing & key rotation
Operations teams need to browse files and rotate vendor credentials without SSH access. A good dashboard reduces support tickets and removes devops from routine tasks.
Structured audit logs
Timestamped, per-user activity logs (upload, download, delete) are essential for compliance investigations and debugging. Verify logs are exportable.
Both SSH key and password auth
Technical partners often prefer SSH key authentication. Less technical trading partners need username/password. A good provider supports both without separate plans.
IP allowlisting
The ability to restrict SFTP access to specific IP addresses dramatically reduces attack surface, especially for vendor accounts that always connect from fixed IPs.
How much does managed SFTP cost?
Managed SFTP services range from $10 to over $1,000 per month, depending on storage, user count, and feature tier. Budget services start under $30/month and are suitable for most SMB use cases. Enterprise platforms can cost hundreds per month before egress charges.
Bridglet, SFTP To Go — suited for teams with 1–10 SFTP users and moderate transfer volumes.
SFTPCloud, FilePulse, Couchdrop — more storage, more users, automation features.
AWS Transfer Family, Azure SFTP, Files.com, GoAnywhere — full MFT platforms, compliance tooling, contract SLAs.
For a full provider-by-provider breakdown with source links, see our dedicated pricing guide:
How Much Does SFTP Hosting Cost in 2026? arrow_forwardProvider landscape
The managed SFTP market spans from hyperscaler infrastructure services to purpose-built SMB tools. Here's an honest overview of where the major providers sit:
AWS Transfer Family
amazon.comAWS's SFTP offering runs on top of S3 or EFS. It handles the server and protocol layer, but you still need Lambda + Secrets Manager for password authentication, and IAM policies for access control. Solid at scale within the AWS ecosystem; over-engineered for small teams. Starts at ~$216/month for a single always-on endpoint.
Files.com
files.comA full file orchestration platform with SFTP, automation workflows, compliance tooling, and an excellent API. Starts at $199/month. Strong choice for teams that need more than SFTP— automation, approvals, and audit reporting. Overkill for simple vendor file drops.
SFTPCloud
sftpcloud.ioA European provider focused on multi-tenant SFTP server management. Supports static IP, custom domains, and BYOS. Plans start at €39/month. Good fit for agencies or developers managing multiple isolated SFTP server instances.
SFTP To Go
sftptogo.comDeveloper-focused managed SFTP with simple API and Heroku/Railway add-on integration. Plans start at ~$10/month. Acquired in recent years with some pricing changes post-acquisition. Good for SaaS teams embedding SFTP into their own product.
Bridglet
bridglet.comBuilt specifically for teams that need isolated vendor file drop endpoints without AWS complexity. Bridglet provisions SFTP directories with scoped credentials, file retention policies, and a simple dashboard. Plans start at $15/month. Designed for the use case where AWS Transfer Family is overkill and a self-hosted OpenSSH server is too much maintenance.
No single provider is right for every use case. The right choice depends on your technical environment, compliance requirements, user count, and how much configuration overhead you're willing to accept.