Bloomberg Markets with Carol Massar and Cory Johnson.\u0010\u0010GUEST:\u0010Robert O'Donnell\u0010President/Chief Analyst\u0010TECHnalysis Research \u0010Discussing Amazon.com Inc. showing investors it can run grocery stores, churn out gadgets, expand its cloud-computing business and invest in new markets, all while selling more products online and managing expenses.