Create Custom Windows 10 ISO

You have a few options:

• Use DISM and SysPrep with Windows Audit Mode
• Use a GUI - I recommend NTLite
• I ended up using both, NTLite for nit-picky features/drivers (and creating unattended.xml) and sysprep to install all my software
• I found its best to create an image via sysprep THEN use NTLite, but either way should work
• I really like using the LTSB Edition of Windows 10 (You can install the store on LTSB now and run with UAC Disabled!)
• Personally I just made two custom ISO's (One LTSB and One Enterprise v1709), good practice anyway.

Now is a great time to check out "Custom Themes for Windows 10" before you finalize your ISO, also, keep your "PreSysPrep" backups, if you are like me, you will re-do this more then a few times before your satisfied.