Microsoft has appointed Amy Hood as chief financial offer—the first female CFO in the company’s history—replacing Peter Klein.

“Amy brings the right talents and experiences to the role as we continue to strengthen our focus on devices and services,” Microsoft CEO Steve Ballmer said. “She has been an instrumental leader in the Microsoft Business Division (MDB), helping lead the transition to services with Office 365 and delivering strong financial and operational management throughout her time on the business.”

As CFO of the Microsoft Business Division, Hood oversaw the acquisition of Skype for $8.5 billion and Yammer for $1.2 billion. She joined the company in 2002.

Hood is one of only four female executives at Microsoft. In addition to herself as the newly-appointed CFO, there’s chief marketing officer Tami Reller, Windows corporate vice-president Julie Larson-Green, and chief people officer Lisa Brummel.