Amazon is expanding its fast delivery options across the U.S., introducing new one-hour and three-hour delivery windows in a growing number of cities and towns. According to the company, three-hour delivery is already available in more than 2,

Same-day delivery not fast enough for you? Amazon is revving up its delivery service by offering one- and three-hour options in cities across the U.S., the e-commerce giant said Tuesday.

Fast delivery applies to over 90,000 everyday items, from groceries to electronics.