2015 Apple WWDC kicks off in San Francisco

Updated: 2015-06-09 09:41

(chinadaily.com.cn/Xinhua)

Craig Federighi (L), Apple senior vice president of Software Engineering, shakes hands with Apple CEO Tim Cook at the Apple Worldwide Developers Conference (WWDC) 2015 in San Francisco, the United States, June 8, 2015. [Photo/IC]

Cook was visibly thrilled to announce that Apple's app store has passed 100 billion downloads.

Apple, headquartered in Cupertino, north California, is the most valued tech company in the world.