From bleepingcomputer.com
A new script makes it easy to create an ISO for any version of Windows 10, including Windows 10 version 1507 through 20H2.
For those not familiar with ISO images, they are a sector-by-sector copy of a DVD. This ISO file can then be written, or burned, to a DVD to create a replica of the original media, mounted as a drive letter in Windows, or extracted by a program like 7-Zip to access the contained files.