Which are Microsoft's 5 biggest acquisitions so far?

Microsoft is acquiring Activision Blizzard for $68.7 billion in its biggest acquisition. Microsoft's $26.2 billion LinkedIn acquisition in 2016 is its second-biggest and its $19.7 billion acquisition of Nuance is third-biggest. Microsoft's acquisition of Skype for $8.5 billion in 2011 is its fourth-biggest acquisition and the $7.5-billion acquisition of GitHub is its fifth-biggest acquisition.