Convox Rack is a private PaaS that runs in your AWS account.
Install a Rack from Convox Console
$ convox apps create myappCreating app myapp... OK
$ convox env set SECRET=foo -a myappSetting SECRET... OK, RABCDEFGH
$ convox deploy ~/src/myapp -a myappBuilding myapp... OKCreating release RHGFEFCBA... OKPromoting release RHGFEFCBA... OKApache 2.0