Thanks for the quick response! I suspected as much with Shiny running as a server and LabKey running under a Tomcat server. I have developed a few Shiny apps, and I really like the way it insulates the developer from all the MVC by providing a fill-in-the-blanks framework, at least through RStudio/devtools. I have suggested to our new developer that she start with simple R reports in views (nice tutorials on the LabKey site) and work her way up to full-blown "apps"/modules with GUI controls in LabKey and eventually ImmuneSpace.