Build variants are simply the result of combining build types and product flavors. Whenever you create a build type or product flavor, new variants are created as well. For example, if you have the standard
release build types, and you create a red and blue product flavor, the following build variants will be generated:
This is a screenshot of the Build Variants tool window in Android Studio. You can find the tool window in the bottom-left corner of the editor, or open it from View | Tool Windows | Build Variants. This tool window lists all the build variants, but also allows you to switch between them. Changing the selected ...