The WordPress WPCommerce Multi-Domain includes the global shopping cart functionality which allows a customer to add products from different sites. Any cart content is carried over, even if the shop is changed to another one. The process works for booth non-logged-in users or authenticated customers. From the checkout perspective, this implies some plugin options changes to match different potential requirements of the owner.Single Checkout option.
When using Single Checkout, all cart content is being processed through a single site/domain. The payment for all products in the cart is collected in full within the shop where checkout occurs. The process goes exactly as before, none of the checkout appearance or functionality is being changed or limited whatsoever. Each Store option.
When using the Each Store option type, the check-out occurs at each of the domains that include a product in the cart. This goes by splitting the cart content into individual recipients accordingly to the assignment of the product. The workflow is very intuitive, works the same as before, and includes a few additional layout guides and details about the checkout process.