Amazon and Walmart Fullfillment Services: FBA and WFS Guides

You can run your fulfillment through Amazon’s Fulfillment by Amazon (FBA)
program, in which Amazon handles all the storing, packing, and shipping of your
products. Here are some resourses explaining the FBA procedure in detail:

In the same way, Walmart also offers Fulfillment services like Amazon. Information about this is below.

Please check  the comparison: