Hundreds of developers were moved from Azure teams to the GitHub org about a year or so ago. Several new features they have added are effectively rebranding/built on top of other Azure projects.
Let us be straight: they effectively made the Azure DevOps (the leftover from the once might Team Foundation Server) a weak product to further foster GitHub. So when this team brought some tech over, that just means, they are now working for GitHub primarily and no longer on Azure DevOps.
Now I'm REALLY worried. Bringing in a large number of people like that at MS means they brought in A TON of managers, leads, and program managers. At MS these categories of folks get ahead primarily through political warfare, "networking", and stabbing each other in the back, and given large enough critical mass, that's what they'll continue to do, unless organizationally isolated from the rest of GH. Or at least that's how it was a little over a decade ago.
GitHub is hardly at arms length from MS.