Microsoft bought one of my favorite pieces of cloud software from a few years ago Deis[1]. With that they also got Helm[2] with the purchase. They are doing GREAT with Helm and are going in a different direction that looks super cool as they mothball Deis called Draft[3]. They are moving away from the OS company they used to be and betting heavily on cloud technologies and I think this Github purchase makes sense. Github has been stagnate for years. MS is embracing open source in a way they haven't before, and I think they are doing so in a way that is going to surprise people.
In NO way am I a Microsoft fan boy. I've been windows free going on a decade. I run Linux Mint and OSX as my primary desktop environments. Apple is burning me hard, the way the computing world is going to change in the next couple years, cluster technology is going to be at it's core and we are going to see some very different things grow out of it. I'm as shocked as anyone to see MS play nice with linux and especially contribute how they have to Kubernetes; which I think is the largest open source project in the world right now?
What if MS dumped resources into world class CI tools to go with Github? What if they made a Github open source module and would let you federate your content? I could see this being a really interesting thing. They could also screw us all, but under their current management I think they are getting ready to be competitive in an emergent environment that can't exist without open source.
[1] https://deis.com
[2] https://docs.helm.sh/using_helm/
[3] https://github.com/Azure/draft