We used this link model in Brazil (custom made) for a client that has a B2B2C platform where vendors (shop owners for a specific industry) use the client's platform as an endless aisle option. We had a challenge for the payment side because:

- the payment needed to be to our client and not the vendor (to avoid double taxation);

- integrating to the POS machines of more than 100K vendors was unfeasible;

- The client wouldn't trust typing credit card info into the vendors computer/tablet/mobile.

So the solution was to use a link that could be send (whatsapp, sms) or read (QR Code), that would take the client to a checkout and payment secure site to finish the transaction.

With mobile wallets penetration increasing we can make more sophisticated solutions where the link would connect directly to the wallet. But for now we are working with link>payment.