https://www.techradar.com/news/windows-10-lean-kills-off-internet-explorer-could-be-coming-to-smartphones-and-tablets

Earlier this week the existence of Windows 10 Lean was discovered, and after a bit of digging more details have been found about this lightweight OS, as well as hints as to what Microsoft plans to do with the software.

We knew that Windows 10 Lean would have an installation size that was 2GB smaller than the standard version of Windows 10, and that this would necessitate cuts to features and apps to keep the size down.