The linchpin in Microsoft's Netflix deal was Xandr, the ad tech firm it recently acquired from AT&T that's helping fuel Microsoft's online advertising ambitions (Wall Street Journal)

Wall Street Journal:
The linchpin in Microsoft's Netflix deal was Xandr, the ad tech firm it recently acquired from AT&T that's helping fuel Microsoft's online advertising ambitions  —  Tech company, embracing underdog role, reignites its ambitions in online advertising  —  Microsoft Corp. MSFT 1.04%&#9650 …