This is, presumably, part of the effort to shove users into new paradigms of usage. Satya Nadella, Microsoft’s CEO, has made Azure a major part of Microsoft’s business going forward, to the point that the company claims Amazon and Facebook are its major gaming competitors rather than Sony and, to a lesser degree, Nintendo. The difference is, now they’ve stuffed themselves into the Start Menu so Microsoft can advertise its cloud services to you. There’s nothing new about the apps themselves they’re the same version of Office you could previously use online. While I am not accusing Microsoft of shipping a trojan, applications that forcibly install themselves without user consent are, in fact, malware.
Microsoft is once again distributing its software like malware.