About the web scene specification objects
Web scenes are sharable 3D scenes hosted on the ArcGIS Platform. The Web Scene Specification describes the JSON object which defines a web scene. Adhering to the Web Scene Specification will allow your applications to create, edit, and render any web scene hosted on the ArcGIS Platform. For a more general overview of web scenes, refer to the Introduction to Web Scenes. If you're interested in learning more about the Web Scene Specification, get started by reading about the top level structure of the web scene object.