Relations between alibaba and yahoo have often been strained , as illustrated by the recent dispute over the spin-off of alipay , a payment subsidiary .
And yahoo recently suffered from an ugly public argument over the spin-off of promising chinese online payment platform alipay from alibaba , a company that yahoo partially owns .
( Last year , the two got into a public squabble after alibaba transferred ownership of the online payment service alipay over to a new company controlled by ceo jack ma . )