AWS Transfer Family Alternative
FTPasHTTPS is an alternative to AWS Transfer Family for developers who want FTP, FTPS and SFTP uploads to trigger a webhook instantly instead of landing in S3 and waiting for a Lambda. AWS Transfer Family writes every incoming file to S3 (or EFS) and leaves the processing pipeline for you to build. FTPasHTTPS streams the uploaded bytes straight into the body of an HTTPS POST to your API, never persists them to disk, and maps the HTTP status code back to FTP reply codes for the client.
The core difference: storage-first vs event-first
AWS Transfer Family is a fully managed file transfer service that fronts your AWS storage with FTP, FTPS or SFTP. When a partner uploads a file, it lands in an S3 bucket or EFS file system that you own. From there, you typically attach an event pipeline—S3 event notifications, EventBridge, or a Lambda function—to actually do something with the file. It is a solid, well-supported building block if your architecture already revolves around S3.
FTPasHTTPS inverts that model. Instead of "store the file, then react to the storage event," the upload is the event. The moment a client issues a STOR command, the bytes stream straight into an HTTPS POST to your webhook or REST API. There is no intermediate bucket, no disk write, and no second system to poll. Your endpoint receives the file in the request body and returns an HTTP status; FTPasHTTPS translates that status back into the correct FTP reply code so the client knows whether the upload succeeded.
Who each tool is for
AWS Transfer Family
Teams standardized on AWS that want files to land in S3 as the source of truth, need the endpoint inside their own VPC and IAM boundary, or are building on top of S3 events, EventBridge and Lambda. A natural choice when storage and AWS-native compliance are central.
FTPasHTTPS
Developers who want an FTP/SFTP front door for an existing API or webhook, prefer event-driven processing with no storage to manage, and value built-in transformations, signed webhooks and a flat, predictable price over assembling AWS primitives.
Honest feature comparison
Where we are unsure of an exact AWS figure, we describe the model generally rather than quote a number. Verify current AWS pricing on the AWS pricing page before deciding.
| Capability | FTPasHTTPS | AWS Transfer Family |
|---|---|---|
| Webhook on upload | Built in. STOR streams into an HTTPS POST to your endpoint. | Not direct. File lands in S3; you wire S3 events / Lambda to react. |
| Disk / object storage | None. Bytes stream through memory; nothing is persisted. | Files are written to S3 or EFS, which you own and pay for. |
| Transformations | Built in: CSV/JSON/XML conversion, schema validation, PGP. | Build your own in Lambda or Transfer Family managed workflows. |
| Developer REST API | Yes. Full REST API for servers, users and config. | Managed via AWS API, SDK, console and IAM. |
| Pricing model | Flat per-server/month plus a transfer allowance. Free tier. | Typically per protocol-enabled endpoint-hour plus data, plus S3/Lambda. |
| Protocols | FTP, FTPS, SFTP. | FTP, FTPS, SFTP. |
| Setup time | Minutes: create a server, point it at your webhook URL. | Longer: endpoint, IAM roles, S3 bucket, plus the processing pipeline. |
| Webhook security | HMAC-SHA256 signed webhooks, retries, dead-letter queue, audit logs. | Secured via IAM and your own Lambda/event configuration. |
When to choose FTPasHTTPS
- You already have an API or webhook and just need an FTP/SFTP front door for partners who cannot change how they send files.
- You want zero file storage—no bucket to secure, no lifecycle policy, no growing object store.
- You want CSV/JSON/XML conversion, schema validation or PGP applied inline, without writing and deploying Lambda code.
- You prefer a flat, predictable monthly price and a free tier with no credit card to evaluate quickly.
- You want signed, retried webhooks with a dead-letter queue and audit logs out of the box.
When AWS Transfer Family may fit better
We want this comparison to be fair. AWS Transfer Family is a strong service and the right call in several situations:
- Your architecture is deeply AWS-native and you want the endpoint inside your own VPC, governed by your IAM policies.
- You genuinely want files stored in S3 as the system of record—for archival, downstream batch jobs, or data-lake ingestion.
- You need AWS-native compliance attestations and billing consolidated under your existing AWS account.
- Your workflows are large batch downloads and reads, not just event-driven inbound uploads.
In short: if S3 is the destination and storage is the point, AWS Transfer Family is a natural fit. If the destination is your application and you want the upload to become an API call with no storage in between, FTPasHTTPS removes the S3-and-Lambda middle layer entirely.
Frequently asked questions
Is FTPasHTTPS a real alternative to AWS Transfer Family?
Yes, if your goal is to receive FTP, FTPS or SFTP uploads and process them programmatically. AWS Transfer Family lands files in S3 and you build the processing pipeline. FTPasHTTPS streams the uploaded bytes directly into an HTTPS POST to your webhook or API, so there is no storage step and no glue code to wire up.
Does FTPasHTTPS store my files like S3 does?
No. FTPasHTTPS does not persist files to disk. Uploaded bytes stream through memory and into the body of your HTTPS request. AWS Transfer Family writes incoming files to S3 (or EFS) by design, so you also manage that storage, its lifecycle and its cost.
Do I still need Lambda with FTPasHTTPS?
No. With AWS Transfer Family you typically attach Lambda or an S3 event pipeline to act on new files. With FTPasHTTPS the upload itself is the trigger: it calls your existing endpoint with the file in the request body, and the HTTP status code maps back to FTP reply codes for the client.
How does pricing compare?
AWS Transfer Family typically bills per protocol-enabled endpoint per hour plus data uploaded and downloaded, and you pay separately for S3 storage and any Lambda you add. FTPasHTTPS uses a flat per-server monthly plan with a transfer allowance—Free at €0, Starter €19, Professional €49 and Enterprise €99—and a free tier with no credit card. Always confirm current AWS pricing directly with AWS.
When is AWS Transfer Family the better choice?
AWS Transfer Family fits best when you are deeply invested in AWS, want files to land in S3 as the source of truth, need it inside your own VPC and IAM model, or require AWS-native compliance attestations. FTPasHTTPS is the better fit when you want event-driven webhooks, no storage, built-in transformations and a simple flat price.