https://arstechnica.com/gadgets/2017/12/microsoft-quietly-snuck-an-ssh-client-and-server-into-the-latest-windows-10/

In 2015, Microsoft announced its intent to bring OpenSSH, the widely used implementation of the secure shell (ssh) protocol used for remote system access and administration throughout the UNIX world, natively to Windows. Without too many people noticing, it turns out that the company has now done this. The Windows 10 Fall Creators Update adds a couple of optional features, with both client and server now available for installation (via Serve The Home).