[Alupis]

It's one of the things Nadella has talked about, and plans to address over time (the extreme compartmentalism of and fierce "not made here" attitude a lot of departments/groups within Microsoft have developed over the past few decades.

[noblethrasher]

On the other hand, a defense of NIH: http://www.joelonsoftware.com/articles/fog0000000007.html

[Alupis]

There are ways to get rid of NIH without losing code quality, testings, responsibility, etc. Nadella in particular is talking about encouraging collaboration between departments.

PS: While the linked article is very relevant here, I'm getting tired of people always linking to Joel's blog -- he's not the definitive software spokesperson; has strong opinions which have been shaped by years at Microsoft - and a lot of his opinions are boxed into those views.