Walmart is rolling out same-delivery across the U.S. to improve access and convenience to customers. Walmart has expanded its pilot test of same-day pharmacy delivery to offer that service to customers across 49 states. The retailer is hailing the development as one of its most expansive technology undertakings.

Walmart introduces same-day pharmacy delivery service, lifting its shares and pressuring competitors like Amazon and CVS.

After launching same-day prescription delivery in six states last year, Walmart says it is expanding the service to 49 states.