https://www.reuters.com/article/us-amazon-com-results/amazon-raises-stakes-for-rivals-with-one-day-delivery-goal-after-profit-surge-idUSKCN1S12K6

Amazon.com Inc plans to deliver packages to members of its loyalty club Prime in just one day, instead of two days, part of a spending ramp-up that may curb near-term profits and will up the ante for retail rivals such as Walmart Inc.