Xbox's first chief operating officer (COO) is leaving after the new role was created just a few months ago. Helen Chiang is leaving Microsoft today, according to an internal Xbox memo seen by The Verge. Chiang has been at Microsoft for 21 years, serving as the head of Minecraft before being promoted to Xbox chief operating officer in July.Xbox CEO Asha Sharma announced Chiang's departure in a surprisingly short memo today. "Helen Chiang is leaving Microsoft today. I'm grateful for her years of service and wish her well," said Sharma. As Chiang is departing today, her immediate responsibilities are being split up between other Xbox leaders …Read the full story at The Verge.