Variant is an API that lets companies dynamically generate 3D variants of their products from a single master file. These models are then usually viewed in AR, VR, or in a web browser.
For example, if a car comes in a range of colours and and wheel rim shapes, a 3D modeller builds all of them into a single file and uploads it to Variant. Then, a customer can request a 3D product variant with their chosen colors and rim shapes to view in AR and only those assets are downloaded & shown.
Using Variant you can allow users to view billions of variants using a single file that has been carefully tagged.