In a memo sent to employees on Thursday, CEO Satya Nadella called this "seeming incongruence" as the "enigma of success." The company expects its overall number of employees to remain roughly flat.

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

Microsoft CEO Satya Nadella didn’t send a company-wide memo when the software maker laid off as many as 9,000 employees earlier this month. Now, Nadella is finally addressing what’s on many Microsoft employee’s minds: layoffs.