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Yes, Microsoft bought Skype, it didn't create Skype. There have been many substantive changes since then (e.g. much less peer-to-peer in operation).

Is there any peer-to-peer now, I thought they routed everything through their own servers now?

I don't know. It seems stupid to entirely drop peer-to-peer but maybe that's the case now.

only "stupid" if you are opposed to this:

Otherwise, dropping peer to peer is the only way to achieve the projects goals.