Alphabet unit Google could face EU antitrust charges next year over its digital advertising business, putting the company at risk of its fourth fine in the EU of more than a billion euros, people familiar with the matter said. Google's ad business, which generated over $100 billion in sales last year, is Alphabet's biggest moneymaker. It accounted for about 80% of annual revenue, despite efforts over the past decade to push into selling hardware, subscription services and cloud computing technology.
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