[w3c/browser-payment-api] Update Introduction to describe actors better (#121)

@sideshowbarker said:

>> three key parties in every transaction

> These are cited as being the user, the merchant, and the payment method. However, a payment method is an instrument, not a party, surely? Wouldn't the party be the payment app provider? And is it necessary to acknowledge that in some cases the payment app provider may not be the same as the party with whom the merchant finalizes the transaction, especially in the case of a basic card payment?

The traditional model for payments is the "4-party" model and I think we'd do well to describe the architecture in this context. The architecture puts the user agent in the role of mediator between the payer (and their PSP - likely the payment app issuer) and the merchant (and possibly their PSP too).

---
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/w3c/browser-payment-api/issues/121