Stock Keeping Unit

SKU stands for wikipedia:Stock Keeping Unit, which is the part number a manufacturer assigns to specific items it sells. A single product, like Windows 10 Pro, is sold in many different packages, each with its own SKU. The 32-bit OEM System Builder one-license package has its own SKU, which is different from the 64-bit package, which is different from the Open Value License 5-pack SKU.

See also

• Microsoft Windows: Windows 10, Windows 11, Windows Server, Windows IoT, Windows Server containers, RDP, Windows Update, Windows Defender, Windows Unified Write Filter (UWF), ReFS, Start-Service, Stop-Service, Set-Service, DISM, SFC, systeminfo, Microsoft Hyper-V, WSL, Windows Terminal, Windows Subsystem for Linux (WLS), Windows Server 2022, PowerShell, logoff, query user, WLMS, File explorer, Copy-Item, BitLocker, Cmdlet, choco, scoop, Windows VSS

https://www.zdnet.com/article/windows-10-editions-explained-in-plain-english/