The Journal reports that the system will leverage eight dedicated e-commerce warehouses and regional carriers to handle orders, instead of relying mostly on FedEx as it has in the past. That's on top of its existing distribution network. If that sounds familiar, it's because Amazon is already doing just it, so the two retailers will be competing for delivery services as much as they are for customers. At first, Walmart will likely pay more per package, but over time as the business picks up (in theory), the costs should come down. If you're looking to give it a shot, you can sign up for ShippingPass waiting list right here.

While Walmart eyes two-day shipping, Amazon has been steadily expanding its same-day delivery option, adding new cities on the regular. It's also working to employ the use of drones to drop off packages in a timely fashion.

Update: Walmart says ShippingPass isn't invite-only, but anyone who's interested in the service will need to put their name on the waiting list linked above. This post has been updated to reflect that additional information.