| Change Control Event | CHG0032715 – Testing of Skype for Business high availability redundant envirionment | Change Control Event | CHG0032715 – Testing of Skype for Business high availability redundant envirionmentCHG0032715 2016-04-20 20:00:00 – 2016-04-20 23:00:00 Testing of Skype for Business high availability redundant envirionment