I like that it's easy to set up, very simple for users without technical skills as well - no need for complicated configuration or other tools/softwares (no C#). It is also good if you want to have several apps running at once with different user permissions. You can't use multiple instances of this software simultaneously because they are using same port number, so we cannot run two applications at same time from one server machine unless there will be some kind of proxy which redirects traffic between them. We needed such solution where customers could access their accounts via mobile app while keeping all business logic inside office system available only through desktop PC browsers.