Hello everyone,
As I know, When using arcGIS Online, your layers are stored on the hosted servers of it, On Portal for ArcGIS, they are stored on your ArcGIS for server but what's for ArcGIS Online when using WAB developer edition ?? I know it uses a webserver but It's NOT a geoserver that it can host geographic data !!
Web AppBuilder for ArcGIS Web AppBuilder Custom Widgets
best reagards,
Sara