If you're wondering whether you should use the USD, USDZ and USDA 3D file formats, the answer is: "It depends on what you are using it for." There are pros and cons to consider. 

The Wavefront OBJ format is the most widely adopted 3D model storage format. The file format name, OBJ, is in reference to its purpose of storing 3D OBJects. The OBJ format was originally the native file format for the 1980s era Advanced Visualizer 3D modeling package. Advanced Visualizer 3D is now obsolete, but some of its code was incorporated into its successor, the Maya 3D editing suite. In addition to just the OBJ geometry format, it has a sister format called MAT, which is used for material definitions.

We know that in today's visual economy, consumers are hungry for AR technology. In fact, 71.5% say that AR is the “future technology they are most eager to use.”  But the truth is, augmented reality (AR) on the web may not be as far into the future as some think.  It's a complex story because the underlying technology for AR on the web is not yet mature.