Amazon Is Next to Face EU Scrutiny

"The question here is about the data," Ms. Vestager said, adding that the investigation was in its "very early days" and that her office has "no conclusions" about whether to open a formal probe. A spokesman for Amazon didn't have any immediate comment. As the EU's antitrust chief, Ms. Vestager has emerged as one of the world's major technology regulators, helping inspire investigations into tech companies from Brazil to the U.S. Most recently, she fined Alphabet Inc.'s Google twice, for a total of €6.76 billion ($7.9 billion), for allegedly abusing the dominance of its search engine and Android operating system to favor its own services--decisions the company has either appealed or said it would appeal. Under her watch, the EU also ruled that Amazon must pay some €250 million in allegedly unpaid taxes to Luxembourg, an order that the Seattle-based company has appealed. Amazon is also drawing increasing scrutiny in its home country.