More than one executable produced when packaging

When I package for Shipping, my output folder contains two executables :

**F:\GameBuild\WindowsNoEditor\myGameWR.exe ( 185K) and

F:\GameBuild\WindowsNoEditor\myGameWR\Binaries\Win64\myGameWR-Win54-Shipping.exe ( 66 megs)**

The first one seems to be a launcher and won’t run without the second. What is the purpose of the first “launcher” executable?

I can launch the second one directly and the game behaves the same.