Amazon.com, Inc. is under pressure to improve its profitability (between 2015 and 2017 it earned a net margin of 1.4%). Amazon is a highly diversified company engaged in online retailing in 14 different countries, audio and video streaming, the production and sale of mobile electronic devices, web hosting and other cloud computing services, and numerous other activities. Of the four main corporate management roles discussed in this chapter—

managing the corporate portfolio, managing linkages among businesses, managing individual businesses, and managing change and development—which offers the greatest opportunities for Amazon’s corporate headquarters to create value?