PayPal Express Checkout is a means of integrating PayPal, that allows you to break down the financial transactions into different steps:
- data capture
- refund ...
In addition to this, PayPal Express Checkout also allows the identification step to be separated from the financial transaction (payment step). This feature enables you to perform the identification step much earlier on in the order process and use the identification result to retrieve the customer's address as registered in the customer’s PayPal account.