Bottom line: Yum's purchase of a high-end take-out delivery service looks smart in targeting a higher margin, niche product in the competitive space, while McDonald's and Starbuck's rapid growth in mobile payments reflects rapid growth of the technology.

Yum buys take-out specialist Sherpa's

Three of the world's top restaurant chain operators are in the China headlines as we head into summer, in different moves that reflect their attempts to tap into the nation's growing...

Bottom line: Yum China's maiden quarterly report and $300 million share buyback program highlight a company that needs to move more aggressively and take more risks to regain its footing after being spun off from its US parent.