For those not that deeply involved into this: There is the whole field of bioinformatics that is involved in this kind of research, creating data in the range of multiple peta-bytes, using some of the biggest computing clusters around. That a big enterprise like Microsoft wants their part of the cake is obvious, especially as this is going to be a billion dollar market. But there is no reason to especially belief in Microsoft, they are just doing what everyone else is doing (and only with more money and/or expertise if they spent more than a few billion dollar on it, else this is mere marketing, nothing really note worthy). Maybe its a nice touch for the field that now even Microsoft has noticed it.