In the United States, Amazon.com (NASDAQ: AMZN) dominates its respective industries. The company enjoys an enviable lead in e-commerce, boasting 44% of U.S. e-commerce spending in 2017. In the cloud-computing space, Amazon Web Services (AWS) is nearly as dominant on a global scale with an estimated 35% of infrastructure-as-a-service and provider-as-a-service related cloud spend.In the second-largest economy, China, Amazon has had mixed success.