Reuters News has named one of its top editors, Alessandra Galloni, as its next editor-in-chief, the first woman to lead the globe-spanning news agency in its 170-year history. A native of Rome, Galloni, 47, will replace Stephen J. Adler, who is retiring this month after leading the newsroom for the past decade. Under his leadership, Reuters has received hundreds of journalism awards, including seven Pulitzer Prizes, the industry’s highest honor.

A speaker of four languages, and with broad experience covering business and political news at Reuters and previously at the Wall Street Journal, Galloni takes the helm as the news agency faces an array of challenges. Some of these are common to all news media. Others are specific to the organization’s complexity: With a worldwide staff of some 2,450 journalists, Reuters serves a range of divergent customers and is also a unit in a much larger information-services business.