Checkout Express can be used when you want the checkout to control address, shipping options and possibly discounts. When using Checkout Express, the webshop must implement callbacks to handle changes to the shipping address.
Embedded Express is the same as Checkout Express, with the addition of being completely integrated in the checkout page of your website.
This is the most advanced form factor for checkouts, as the webshop order and the Dintero session needs to be kept in sync.
This chapter looks at different use cases that needs to be implemented in order for Checkout Express and Embedded Express to work.