COLLADA (COLLAborative Design Activity) is an XML-based schema used to exchange digital assets between various graphics software applications. Saved with the .dae extension, it allows users to convert assets among different testing tools without loss of data. It was widely used in the Playstation 3 and Xbox 360 era but has been largely succeeded by glTF and USD. Sample COLLADA files are used for testing legacy 3D content pipelines. Developers use them to verify that XML parsers can correctly interpret the complex hierarchy of the scene graph. They are also used to check the import functionality of game engines that still support older asset libraries.