Windows Subsystem for Linux (WSL) is a feature of Windows 10 that allows you to run a Linux environment on your Windows machine, without the need for a separate virtual machine or dual booting. WSL is designed to provide a seamless and productive experience for developers who want to use both Windows and Linux at the same time. You'll need to enable this feature in the Control Panel's Optional Features menu to use ArchWSL.
ArchWSL is an instance for WSL based on the Linux distribution Arch Linux, a minimalist distribution which strives to provide the latest stable versions of most software by following a rolling-release model.