Yes, Shared Source, not open source. Microsoft (un)surprisingly understood the differences, back in the day, and avoided the latter term.
Re:GitLab Isn’t Really Open-Source
by solarkraft on Monday June 04, 2018 @02:26PM
(#17230602)
Woah, what? The current version?
Edit: They call it Shared Source actually: https://www.microsoft.com/en-us/sharedsource/default.aspx