https://www.cnet.com/news/walmart-adding-millions-more-items-to-two-day-shipping-program/

Smaller sellers who want to join the two-day shipping program will be able to team up with third-party shippers, including Deliverr. Those sellers can also offer two-day shipping in only some parts of the country. Plus, customers will for the first time be able to return some of these outside merchants' items in stores.

Walmart's announcement is another sign of its expanding ambitions online, with the company already refreshing its website, expanding its virtual inventory and scooping up several e-commerce companies. The efforts have been paying off, with the company expecting online sales to grow by 40 percent this year.