# Transfer Family

[Document ](https://docs.aws.amazon.com/transfer/?icmpid=docs_homepage_migration)| [Pricing ](https://aws.amazon.com/sftp/pricing/)|

## Overview

* Simplifies migration of SFTP, AS2, FTPS, and FTP based workflows to AWS.

## How it works

### 1. Choose Protocols

Choose the protocols over which clients can connect to your server's endpoint

Supported transfer protocol:

* OpenSSH: Mac, Linux
* WinSCP: <mark style="background-color:red;">Windows only</mark>
* Cyberduck: Mac, Linux, Windows
* FileZilla: Mac, Linux, Windows

### 2. Map your hostname

Associate your hostname with the server endpoint.

**Server endpoint:**

* Publicly accessible
* VPC hosted: access controlled using Security Groups.

**Custom hostname:**

* Route53 DNS alias
* Other external DNS service.

### 3. Set up your users

Select your identity provider to set up your users' access to your endpoint

### 4. Select your S3 bucket or EFS filesystem

Assign IAM role(s) to access your S3 bucket(s) or EFS file system(s) for storing data transferred over the protocols

## Concepts

* <mark style="color:red;">S</mark>FTP (<mark style="color:red;">SSH</mark> File Transfer Protocol) - file transfer over Secure Shell
* AS2 (Applicability Statement 2) - messaging protocol for exchanging business-to-business data
* FTP (File Transfer Protocol) - unencrypted file transfer protocol
* FTP<mark style="color:red;">S</mark> (File Transfer Protocol <mark style="color:red;">Secure</mark>) - file transfer protocol with TLS encryption.
* FIPS (Federal Information Processing Standards)

## Trivia

* By default, AWS Transfer for SFTP provides a host key for your AWS SFTP server.
* Only SFTP, AS2 need a connector.