Amazon expands same-day grocery delivery to over 1,000 U.S. cities, challenging Walmart and others.

Amazon has expanded its same-day grocery delivery service to over 1,000 cities and plans to cover over 2,300 locations by the end of the year. The service, free for Prime members on orders over $25, includes fresh items like produce, dairy, and meats. This move is expected to impact competitors such as Walmart, Kroger, and Target. Amazon is investing over $4 billion to expand its delivery network, focusing on small towns and rural areas.