I was trying to make custome image of Windows IoT Core. There is mentioned "Combining provisioning package with OEM Package". So What is OEM Packages and why it is use in custome image creation.
Specifically OEM standards for Original Equipment Manufacturer.
It will be in use in custom image creator as the base image for the operating system before any changes are made beyond Microsoft's original version.
The base image (OEM) + your image = the new OS image.