https://www.cnbc.com/2019/04/26/wall-street-is-excited-about-amazon-prime-one-day-delivery.html

In breaking down Amazon's first quarter earnings, Wall Street analysts focused on the company's announcement that it would shorten standard delivery for its Prime members to one day from two days.

The move was welcomed by analysts, who pointed to one-day Prime delivery as a way to further drive growth within Amazon's consumer e-commerce business while simultaneously distancing the company from its competitors.