MSIX package
Store distribution means the package is signed and delivered by Microsoft, updates arrive through the Store, and the application declares exactly which capabilities it needs — DeskDrawer requests only what a packaged desktop application requires, which was part of Store certification in 1.1.1.
Packaging also determines where data lives: the Configuration folder is the package's per-user data folder, and uninstalling removes it automatically, leaving nothing behind. See Uninstalling.