### Are these really distinct versions?

Yes. These distinct version tags are used for questions that are specific to a particular version. Not all users have upgraded from older versions.

> [![enter image description here][1]][1]

Source [Windows 10 version history][2]

**What is Windows 10 S?**

> Windows 10 S is a specific configuration of Windows 10 Pro that offers a familiar, productive Windows experience that’s streamlined for security and performance. By exclusively using apps in the Microsoft Store and ensuring that you browse safely with Microsoft Edge, Windows 10 S keeps you running fast and secure day in and day out.  
>
> For more information, please refer to [this page][3].


Source [Windows 10 S FAQ](https://support.microsoft.com/en-us/help/4020089/windows-10-s-faq)


  [1]: https://i.sstatic.net/hHk3G.png
  [2]: https://en.wikipedia.org/wiki/Windows_10_version_history
  [3]: https://go.microsoft.com/fwlink/?linkid=847244