9 Comments
Sep 24, 2022·edited Sep 24, 2022Liked by Alex Xu

Great stuff yet again. I would have loved a more detailed explanation on UPI.

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Sep 30, 2022Liked by Alex Xu

Great read. Would love to read detailed explanation on UPI.

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Your knowledge delivery is succinct but powerful! Thank you.

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great stuff, what is name of the tools used in making all this diagram.

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for each of the topic, could you please add the resource links so that anyone wants to deep dive, they can refer to?

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JsonCrack is such a great tool :)

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Hi Alex and team, first of all..I really appreciate the work you do. I have just one request...Can we have a more detailed explaining of the UPI flow? That would really help. Thanks a lot in advance:)

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Great content. Could you cite your sources / references for apple / google pay architecture ?

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author

https://www.investopedia.com/articles/personal-finance/010215/apple-pay-vs-google-wallet-how-they-work.asp

https://support.apple.com/en-us/HT203027

https://developers.google.com/pay/api/android/overview

We will make some changes to the diagram to make the more accurate. The main changes are

- Change E-commerce Server to POS terminal

- Change "bank" to "Financial institution" which refers to the payment network, issuing bank, and the token service provider

- Update Google pay to include token service provider as well

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