For the average home user: stick with the official Microsoft ISO and run a debloater script afterwards. For the seasoned sysadmin or modding veteran: the Integral Edit is a powerful, time-saving tool—just be sure you know exactly who built it.
The text likely refers to a specific, community-modified ISO of (the May 2021 Update). These unofficial builds are often found on file-sharing sites and forums, combining multiple editions into one installer with customized features. Version Overview: Windows 10 21H1 windows 10 21h1 16in1 enus x64 integral edit hot