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Who would have imagined it 5 years ago?

Who would have imagined it five months ago?

Quite a lot of people actually. These moves have been on the cards for years. Just waiting now for the next big move in the coming months of when they acquire Xamarin.

I was hoping there would be an announcement at Build that they had acquired Xamarin, but that didn't happen. All that was mentioned was that they were a partner that they were working with. Still a possibility in the future though.

The open sourcing of Roslyn can only mean good things for Xamarin.

Microsoft clearly is involving Xamarin in this announcement -- parts of Xamarin are going into the same dot net Foundation that's in charge of this, and de Icaza was on stage for part of this. It may be best for Microsoft at this point if they support and involve Xamarin without buying it outright, people who want to use Xamarin with MS tooling can take advantage of Visual Studio integration, people who are wary of Microsoft can use Xamarin Studio and Mono and never officially touch Microsoft's stack while still becoming part of their ecosystem.

How this affects the (pretty high) Xamarin prices? https://store.xamarin.com/

They open-sourced a lot of things related to .NET in the recent years. That Roslyn was to join those things doesn't exactly come as a surprise. It's still welcome, though.

When they first started talking about Roslyn a couple of years ago, the plan was always to open-source it, when they felt good about the quality.

ASP.NET went open source 2 years and a few days ago. Since at least that long ago, things have pretty steadily been heading in this direction. Only reason we haven't seen things more along any more quickly is that companies this size just don't move that fast.

At that moment they already released part of .NET, asp.net and azure.

I think you wanted to say that the "change" was made only thanks to the exit of Ballmer, but I think that's an exaggeration.

> I think you wanted to say that the "change" was made only thanks to the exit of Ballmer, but I think that's an exaggeration.

I think it'd probably be more accurate to say that these particular changes are symptoms of the same corporate change of direction that the change of CEO was, not that the change of CEO specifically resulted in these releases.

yulaow, clearly the lead-time on a lot of this stuff is longer than Ballmer's been gone, so yeah, not fair to put all this on his departure. "Five months" was a pithy play off "five years," nothing more or less than that.

Does it really take that long to make a decision to open source something? Perhaps for a large company it does, I dunno. The projects themselves may have been in development for a long time (this is definitely true of Roslyn), but that doesn't mean they were always going to be open sourced.

They announced a Foundation with members outside of Microsoft, in charge of a mix of their code and code from Xamarin. So you need to coordinate all of that. You also probably need to have lawyers review all the code and make sure that MS has the rights to everything included so they can do this, someone to scrub all the comments to make sure developers didn't throw in something embarrassing or worse, you need to set up workflows for reviewing community bug reports and patches... this isn't something you can do in an afternoon.

> this isn't something you can do in an afternoon.

How about in 5 months? Don't get me wrong I'm not falling on either side of this argument, but I think it seems at least slightly plausible that this process could have been initiated or at least accelerated by the new CEO.

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