Universal Scene Description (USD) is an open and extensible ecosystem for 3D worlds. USD is more than just a file format; it is a common language for defining, packaging, assembling, and editing 3D data, and it facilitates the use of multiple digital content creation applications.

Originally invented by Pixar Animation Studio, OpenUSD encompasses a collection of fundamental tools and capabilities that accelerate 3D workflows.

USD provides for interchange of elemental assets (such as 3D models) or animations. It enables assembly and organization of any number of assets into virtual sets, scenes, shots, and worlds, transmitting them from application to application.