Thus, adkwinpesetup.exe is the bootstrapper or the setup launcher that installs the Windows ADK, including the WinPE add-on.
"Install the Windows Assessment and Deployment Kit to this computer" Microsoft Learn Important Considerations Install the Windows ADK offline - Microsoft Learn adkwinpesetup.exe offline download
Thus, adkwinpesetup.exe is the bootstrapper or the setup launcher that installs the Windows ADK, including the WinPE add-on.
"Install the Windows Assessment and Deployment Kit to this computer" Microsoft Learn Important Considerations Install the Windows ADK offline - Microsoft Learn