Didn't I hear github is moving to Microsoft Azure ? I wonder if these outages are related to the move.

Remember hotmail :)

Huh? What were they on before? The acquisition by MSFT is 7 years ago, they maintained their own infrastructure for that long?

The Github CEO did step down a few months ago, they never named a successor. Could have something to do with the recent issues. https://news.ycombinator.com/item?id=44865560

Yes they are/were on their own hardware. The outages will only get worse with this move.