So far so good
As a cloudformation ready template, I am using this license with Linux AMI as a SFTP gateway, and so far so good, we are happy to get the job done in 30-40 minutes with a web front-end for administration and a server-side file transfer to/from a bucket. Just as simple as it sounds, it saves you time for the multiple SFTP options and versions and hardenizations. I would add some re-deploy retry options when the is not present or the elastics IP are out of quota. Nice to have in further versions.
Thank you for your feedback. As far as I know, CloudFormation won't be able to tell beforehand whether service limits have been exceeded. But there's room for improvement for the CloudFormation template in terms of avoiding other runtime errors that are preventable. And it might be useful to have a documentation page for troubleshooting CloudFormation deployment errors such as hitting the limit of 5 Elastic IPs. Feel free to reach out to us at support@thorntech.com if you would like to further discuss. Thanks!