As the US investigates Google for possible abuse of power as the biggest digital ad broker, a detailed look at how Google built the world's dominant ad machine (Wall Street Journal)

Wall Street Journal:
As the US investigates Google for possible abuse of power as the biggest digital ad broker, a detailed look at how Google built the world's dominant ad machine  —  The U.S. is investigating whether the tech giant has abused its power, including as the biggest broker of digital ad sales across the web

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