In that time, your card communicates with the terminal, the terminal sends an ISO 8583 message to the acquiring bank, the acquiring bank forwards it to the card network, the network reaches your issuing bank, and a decision comes back the same way. Every party checks something different. Every message has a format, a structure, and a reason.
That is fintech – and this course explains all of it, from the first tap to the final settlement, step by step.
Who built this course
I am a Senior Product Manager specializing in card issuing and payments, with 12+ years of hands-on delivery across Europe, Asia, and Latin America. I have built Card-as-a-Service platforms, launched eWallet and BNPL products, migrated millions of cards across national processors, and worked directly with Visa and Mastercard networks.
This course is everything I have learned – structured so that a complete beginner can follow it and come out thinking like a payments professional.
