PALO ALTO, U.S./TAIPEI -- The task of finding a successor to the founder of a big-name American technology company has proved to be one of the most difficult management challenges in business.

Daniel Zhang Yong, right, the chairman-in-waiting of Alibaba. Current Executive Chairman Jack Ma Yun, left, has "[been preparing] this succession plan for 10 years," he says. © Reuters
Jack Ma has been gradually handing power to Daniel Zhang for years