세계 최대의 온라인 쇼핑몰 - 아마존

Amazon inside

A few facts about the biggest online store Amazon:
Weekly shop serves over 137 million customers;
Its annual income is over half of the world's GDP;
Amazon's sales more than the next three competitors combined;

Under these volumes need appropriate warehouses. 
Their total area is 700 times more Madisson Square Garden.