OpenUSD (Open Universal Scene Description) is a framework and file format used to describe complex 3D scenes. It allows applications to represent objects, geometry, materials, lighting, and relationships within a structured scene graph. OpenUSD is widely used in animation, visual effects, simulation, and increasingly in real-time 3D applications.

Example: Minimal OpenUSD file

#usda 1.0

def Xform "World"
{
}

This example defines the root object World, which will contain the scene elements.