Doesn't sound very reassuring. Do they have a good track record with non-MS stacks?
Their team has been doing good work. For example, Azure had the first/best Docker integration of all the cloud providers. What they had was superseded by docker-machine and swarm eventually, but they were definitely thinking ahead of the curve.
As a user of Azure, I admit that find some aspects of the service unusual, such as requiring users to pick a globally-unique identifier for every server they boot. As in, they ask you to provide a string for your instance's name, then they provide a hostname based on that string; if the hostname (thus the name you pick) is taken, you'll get an error.
I think they've just won favor of startups recently because they've been subsidizing their cloud costs. If theres one thing Microsoft has, its business savvy.
Azure is so inexpensive even without BizSpark it's kind of amazing to me. Having done startups in the 1990s, 2000s and 2010s, what people have available now is incredible IMO.</old man>