Hi everyone, exists any possibility of creating layers, feature classes and services using ONLY Rest services?
Pedro,
I am not sure what you mean by this. The JS Api uses rest services to add layers to the map. So your question is not very clear.
If you are asking, if we can create layers and feature classes using only REST services, then the answer is no. We create datasets, feature classes, and maps in ArcMap/ ArcCatalog and publish them as RESTful services. Later, we use ArcGIS API for Javascript to add those layers and services to the maps. REST Services offer easier and smoother way to connect and interact with the web maps.
Not sure if I understood your question correctly. If the map is published as Feature service (Feature Access) with EXPORT option enabled, you can open the service in ArcMap and export data to a feature class.