You're looking for information on makeappx.exe !
packaging
When a developer downloads the Windows SDK and invokes makeappx.exe from the command line, they are accessing a tool with three primary responsibilities: , unpackaging , and validation .
MSIX Packaging Tool:
A lighter way to get the latest SDK tools is by installing the MSIX Packaging Tool directly from the Microsoft Store . Common File Locations Once installed, the file is typically found in: App packager (MakeAppx.exe) - Win32 apps - Microsoft Learn
Windows SDK:
Download the latest Windows SDK from the Microsoft Developer Portal.