hi istefanos
SDK maybe an overkill here. Is there any reason a customized View and something like a Map resource wouldn't suffice here?
The background image can be anything. If you just want a list, and not a Map, that is also easily achievable.
The page will refresh based on the web console settings' refresh frequency (default 5 minutes)
If you don't the users to login, search for the keyword "directlink" in the admin guide. It is a reserved account that you can enable to bypass logins for read-only access of the data.
hi austevek,
For the customer facing one, you can consider an additional web server
and there are also some guidelines for multi-tenancy here Orion multi-tenant deployments
SDK may or may not be required depending on what you are trying to do here.