HANGZHOU, CHINA - JULY 08: People line up to enter the Alibaba Self-service Store 'Tao Cafe ... found another way to rival Amazon. It recently debuted a pop-up cashier-less cafe called Tao ...

Amazon's newest store is smaller than the average New York City apartment. The company unveiled a small-format version of its cashier-less Go concept on Wednesday. It measures only 450 square feet ...