It sounds like @bkparso has a single site, so would this be a good design decision as opposed to a single phoenix web application and using routing? 
I would think that the original design decision of using the master proxy is either that the two web apps (backoffice and bank_web) had to live on separate servers or that they started off as separate web apps and were brought together to a single project and it wasn’t worth it to refactor it into a single web app. What else would be the benefit of the proxy web app approach?
EDIT: Found another thread specifically talking about ExAdmin and one vs. two phoenix apps.
