Expanding into transportation, from trucks to planes, is one of Amazon’s most important endeavors as it strives to lure new customers.

Machine learning and other artificial intelligence technologies will shape the eCommerce market in 2017 and beyond.

Amazon had its most successful holiday shopping season to date in 2016, according to a batch of statistics that the company released. In particular, the stats illustrate the popularity of the company’s Prime membership service and Echo devices, as well as its rapidly expanding logistics capabilities.

According to China’s State Post Bureau, online purchases generate more than 21 billion of the 30 billion packages delivered this past year in the country. The year before saw 20 billion total packages, including both eCommerce and other parcels. And as Alibaba and JD.com are gaining international appeal, more shipments are going and coming overseas. Nearly 30 percent of the total are packages being shipped from the United States.

The U.S. e-commerce giant described plans for an “airborne fulfillment center” (AFC) such as an airship or blimp that would float at an altitude of around 45,000. The airship will be stocked with lots of products.