API Reference > imodeljs-backend > IModelHost IModelHost Classes for configuring and administering the backend host. See the learning article. Classes Name Description FileNameResolver Extend this class to provide custom file name resolution behavior. IModelHost IModelHost initializes imodeljs-backend and captures its configuration. IModelHostConfiguration Configuration of imodeljs-backend. KnownLocations Well known directories that may be used by the application. Platform Information about the platform on which the app is running. Last Updated: 15 June, 2021