Orders API use cases

Orders API use cases are organized into 4 categories:

Category	Description
PayPal Checkout	Buyers are aware that PayPal is processing their payments, and they can pay using any of the PayPal-associated payment methods.
Expanded Checkout	Buyers don’t use a PayPal account to pay for their order but prefer other payment sources. Buyers aren't aware that PayPal is processing their payment.
Save payment methods	Buyers can save a payment method, such as a card or PayPal wallet, and choose to use this payment source for future orders.
Alternative payment methods	The Orders v2 API supports payment methods other than PayPal Checkout and Expanded Checkout.