Marqeta controlling in-app money flows

This shows Marqeta is not just supplying card credentials, it is sitting inside DoorDash's checkout loop as the system that authorizes and routes the courier's restaurant purchase. In practice, DoorDash collects the diner payment, creates a single use or tightly controlled virtual card for that order, and the Dasher uses that card at the restaurant. That makes Marqeta part of the live money movement and approval logic, not just a back office vendor.

• The closest comparable is Klarna's ghost card flow. A user picks an item, a virtual card is issued for the exact merchant and amount, and interchange from that purchase is split across the stack. DoorDash's red card style purchase flow works on the same core issuing pattern, just embedded in food delivery instead of BNPL.
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• This is why issuer processors matter for product design. Marqeta's APIs let companies like Uber, DoorDash, Square, and Klarna turn payments into app features, such as courier purchases, driver cashout, stored balance spending, and one time checkout cards, without building bank grade issuing infrastructure from scratch.
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• The economics are meaningful but thin. In consumer debit, total interchange is roughly 135 basis points, with the network and bank taking their cuts first. What remains is split between the processor and the platform customer, so the winner is the one that drives huge volume and keeps the card central to the workflow.
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Going forward, the strongest infrastructure providers will be the ones that can own more of these hidden in app payment moments. As more delivery, marketplace, and vertical SaaS products embed controlled cards and instant payouts into the core workflow, issuer processors move from payment plumbing toward becoming critical operating infrastructure for commerce apps.