Susan Wojcicki

Wojcicki is in the hot seat this year, steering YouTube during one of the most crucial moments in the video service’s history as it faces intense scrutiny for its handling of controversial content. YouTube and parent company Google also agreed to pay a $170 million fine over its data-collection tactics as they pertain to ­children. Ethics aside, YouTube is still massive, estimated to bring in up to $25 billion in sales.

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