: Stands for "All-In-One." It means the single ISO file contains 16 different editions of Windows (e.g., Home, Pro, Education, Enterprise, and their "N" or workstation variants) .
If you're looking for more info on this specific build, I can help you with: Windows 11 23H2 Build 22631.3593 AIO 16in1 -Non...
Windows 11 23H2 Build 22631.3593 refers to the May 2024 cumulative update (KB5037771) for Windows 11 version 23H2 . The "AIO 16in1" designation indicates an "All-in-One" : Stands for "All-In-One