Our Studio uses an ECS (Entity Component System) to deliver our complex spatial web experience. A typical scene might consist of an Entity hierarchy including a few pre-configured Entities.
For example I might have a Ground Plane, Model Component(3D Asset) and Skybox in my scene. We have provided many pre-made entities that are then packaged into prefabs for our user base and can be found in the Default Prefab shelf in the Asset Panel. It is particularly useful to note you can build custom Entities to accomplish unique tasks.