Do AWS Transfer Family support AIX?

AWS Transfer Family supports the SFTP protocol which isn't tied directly to any one Operating System. The behavior of SFTP within any Operating System would be dependent upon which client you are using.

We test/validate a few common clients listed here: https://docs.aws.amazon.com/transfer/latest/userguide/transfer-file.html

If you are having issues with a specific client on AIX I would recommend letting us know more details on the client/specific version and what the error might be or reaching out to our Premium Support team for further investigation.