Microsoft has eliminated approximately 15,000 roles since May. The company’s CEO said layoffs are the “enigma of success.”

Following Microsoft's latest mass layoffs that affected around 9,000 people--including dramatic cuts at Xbox--CEO Satya Nadella sent a memo to staff that was shared on Microsoft's blog. In the memo to staff, Nadella addressed what he called the "why, what, and how" of the decision to cut so many jobs.