This session introduces Universal Scene Description (USD), open-source software from Pixar Animation Studios that's used as the core representation of the 3D world within NVIDIA's Omniverse platform. We'll show what USD is and how assets are constructed with it. We'll show why this standard and open representation enables interchange with 3D applications to more easily construct virtual worlds. We'll include hands-on demo examples that illustrate USD scene construction in Python that you can try with a web browser at home, and show how to interact with USD files within Omniverse.