This application would be running in a local environment that mirrors a web based environment when internet connection
may be lost for redundancy. In example:
www example.com would still work locally after internet went down as www.example.com with dns configured correctly.
When the web based version no longer resolves, local version is served. The site is the same and SSL and server is the same so all can carry on without an internet connection . The only thing that will fail is the payments that have to travel via internet... a que would enable payments to be served when the connection is restored. This is for restaurant based pos system which can carry on with internet service outages.
I hope that helps clear things up!!