Facebook has lost key people in the past year, like David Fischer and Carolyn Everson. Several are CEO Mark Zuckerberg and COO Sheryl Sandberg’s top deputies. Here are 10 of the biggest departures. See more stories on Insider’s business page. Advertising and marketing is Facebook’s lifeblood, but over the past year, key executives overseeing those disciplines — many of whom were CEO Mark Zuckerberg and COO Sheryl Sandberg’s top deputies — have jumped ship. Facebook is being buffeted on pretty much every front. Governments around the world […]

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