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.

The retail giant announced Tuesday that "1-hour delivery is already available in hundreds of cities and towns across the U.S., and 3-hour delivery is live in over 2,000 cities and towns."