Google has unveiled a surprise restructuring, creating a new parent company called Alphabet Inc. Under the rebranding, Google will retain its best-known businesses, such as search, apps, YouTube and Android. Some of the newer entities, such as the investment and research divisions, the "smart-home" unit Nest, and the drone arm will be run under Alphabet. Google founder Larry Page said it would create a simpler structure for what had become a diverse group of businesses.