Scene Layers are containers for arbitrarily large amounts of geographic data. The delivery format and persistence model for Scene Layers is referred to as Indexed 3d Scene Layer (I3S) and has been shared as an open specification publicly for use by data and technology creators to produce and consume content that will work across ArcGIS. The I3S format is declarative and extendable and can be used to represent different types of 3D data. In this session, the presenters will discuss the structure and variations in I3S to help attendees understand how they can create and visualize content including 3D objects, 3D points, point clouds, and large integrated mesh data sets, such as data from Drone2Map.