Win10.pro.aio.u18.x64.-wpe-.iso

: An "All-in-One" ISO typically bundles multiple versions of Windows into a single file. During setup, the user can often choose between different sub-versions (e.g., Pro, Education, or Enterprise) or different configurations (e.g., pre-activated vs. clean).

: This most likely refers to the release or update iteration of that specific custom build (e.g., "Update 18") or a specific versioning scheme used by the modder who compiled it. : This stands for 64-bit architecture WIN10.PRO.AIO.U18.X64.-WPE-.ISO