In addition, it allows Alibaba's young leadership to further grow and develop as well." Ma wrote in his note that splitting the company up into 25 units with clear-cut responsibilities will give it a strategic and operational advantage and ensure the sustainability of its growth. (Alipay, Alibaba Group's online payment platform, and microlending arm Aliloan are not included in the restructuring). According to Ma, "This is the most difficult reorganization in Alibaba's 13 years. It's a culture shift!"