Generally the LC is used to install the OS along with latest driver/firmware available for the particular platform/OS.
Till date there was no facility available to do unattended OS installation using the LC, but this is possible in SLES12.
This can be achieved in two different ways.
The SLES12 has a New implementation in New Yast installer that it tries to detect the autoyast.xml file in block device which is having a label name “OEMDRV” during the boot,
due to this the SLES12 installer kicks the unattended installation if autoyast.xml file is available in OEMDRV.