[danko]

Perestroika is the era in Soviet history when the USSR began to 'thaw' in its relationship to the West and reform its economic policy to be less collectivized and more capitalistic.

In this case, Microsoft would be the USSR and its policy of closed-source Windows/.NET domination would be the old Communist Party hegemonic philosophy. That would make Satya Nadella Microsoft's Mikhail Gorbachev.