Seonglae Cho- International account payments use SWIFT code
- Domestic US account payments use routing number
- Card payments through card companies incur fees, and payments may be blocked if zip code for international payments is not registered
Payment Companies
Payment Industry Notion
Lessons Learned From Payments Startups
Over my career so far, I’ve worked in a number of payments companies, including several startups. At the last startup, I was involved in building out a payments platform from scratch (from first line of code). This post is a collection of thoughts and lessons learned. Hopefully, at least some of this is useful to others.
https://www.pgrs.net/2024/01/26/lessons-learned-from-payemnts-startups
Payments 101 for a Developer
An Open Source Financial Switch to make Payments fast, reliable and affordable - juspay/hyperswitch
https://github.com/juspay/hyperswitch/wiki/Payments-101-for-a-Developer
Amazon begins large-scale rollout of palm print-based payments
Amazon will expand its Amazon One palm print checkout system to dozens of Whole Foods locations, marking the most significant expansion of the technology that was introduced in 2020. Amazon One allows customers to speedily check out at retail locations using only their palm prints after storing a scan of their hand via an interface at Amazon's kiosks.
https://arstechnica.com/gadgets/2022/08/amazon-begins-large-scale-rollout-of-palm-print-based-payments
Apple plans to build its own financial infrastructure for payments and lending
Apple plans to build its own in-house technology and infrastructure for financial services, according to a new Bloomberg report citing people with knowledge of the matter. The initiative is internally codenamed "Breakout" as an allusion to the idea of users breaking free from the current establishment players in the financial system.
https://arstechnica.com/gadgets/2022/03/apple-plans-to-build-its-own-financial-infrastructure-for-payments-and-lending
Terminologies
Payments 101 for a Developer
An open source payments switch written in Rust to make payments fast, reliable and affordable - juspay/hyperswitch
https://github.com/juspay/hyperswitch/wiki/Payments-101-for-a-Developer
The reason why one can't easily create a direct payment company is because payment networks are heavily structured around card companies, payment processors, and banks, requiring enormous lobbying efforts and security deposits.
Payment Processor Fun 2025 -- Making Your Own MSP
Valve and Itch have been in the spotlight for being more or less forced by "Payment processors" to pull certain adult content off their storefronts. The short story of it is Valve pulled a couple of games down while Itch pulled down everything marked mature/adult temporarily and had to sort through their entire library to find certain kinds of content to remove. One of these responses drew more ire than the other, understandably.
https://voidfox.com/blog/payment_processor_fun_2025_making_your_own_msp/