Former Alibaba CEO Daniel Zhang steps down as head of cloud unit amid leadership reshuffling

Zhang resigned as head of Alibaba's cloud computing unit in a surprise move.
The departure comes as Alibaba undergoes a historic overhaul and faces regulatory pressure.
Eddie Yongming Wu has taken over as CEO of the cloud business.
Alibaba plans to invest $1 billion in a technology fund established by Zhang.
The company aims to spin off and publicly list its cloud unit within 12 months.