Every vehicle Amazon uses to deliver packages in its exploding logistics empire, including autonomous land and air robots

Amazon handles imported goods from China by reserving space on ocean vessels and organizing its own logistics. Wholesalers that manufacture in China can reserve spaces in these containers through Amazon to ship to the west coast of the US.

In 2018, Amazon shipped more than 5,300 containers from China to the US, according to USA Today.

This eases some of the retailer's reliance on global shipping companies. Amazon does not own any of its own ships.

Amazon purchased several thousand truck trailers in 2015 to transport goods between fulfillment centers.

They may only have around 300 tractor portion of the trucks to move those trailers, however, according to Transport Topics News. It mostly relies on trucking partners to supply that capability, according to Recode.

Amazon has been moving a limited amount of cargo with self-driving trucks developed by Embark on Interstate 10, according to a CNBC report from January.

In 2018, Amazon purchased 20,000 new Mercedes-Benz Sprinter vans to use for its last-mile delivery program.

This purchase made Amazon the largest operator of Sprinter van at that time.

Amazon recently purchased 2,237 large delivery walk-in vans from Spartan that will be used for home delivery. The vans, which are sold under Spartan's will be built during the second half of 2019.

These vans are larger than the Mercedes-Benz Sprinters and are being built custom for Amazon's last-mile program.

Amazon employs drivers to deliver packages through the Amazon Flex program. This allows the drivers to use their own vehicles so long as they are mid-sized sedans or larger.

Bicyclists are also allowed in the Flex program in certain regions, although the bicycle used must have a basket.

Amazon has been testing Scout, an electric, wheeled, and autonomous delivery device, since January. Scout is the size of a small cooler and travels at a walking pace on sidewalks.

Testing has been taking place in Washington state's Snohomish County, making deliveries to nearby customer's homes.

Amazon has been testing drone delivery under the Prime Air delivery system with the goal of delivering packages to customers in under 30 minutes. The company began making very limited deliveries to customers in a rural area of England in 2016.

Amazon recently unveiled a new autonomous drone design in June it says can go as far as 15 miles, delivering packages as heavy as five pounds.

The company also recently received a certificate from the Federal Aviation Administration giving it permission to test their drones, which the company says will start "within months."