What is Windows Lite?

Microsoft is working on a new version of Windows that may not actually be Windows. It's currently called Lite, based on documentation found in the latest build, and I can confirm that this version of the OS is targeting Chromebooks. In fact, there are markings all over the latest release of the insider builds and SDK that help us understand where this OS is headed.If you have heard this before, it should sound a lot like Windows 10 S and RT; Windows 10 Lite only runs PWAs and UWP apps and strips out everything else. This is finally a truly a lightweight version of Windows that isn't only in the name. This is not a version of the OS that will run in the enterprise or even small business environments and I don't think you will be able to ibuy' the OS either; OEM only may be the way forward.[...]And there's something a bit different about Lite that we haven't seen from every attempt at launching this type of software in the past: it may not be called Windows. With a new name and a different UI, uses WCOS, and is going to be Microsoft's next 'big bet' in the Windows space.

All I'll say is that you should keep an eye on Build 2019.