Payments & fintechHardSDE-3

You are building a payments platform in India and must survive a full region outage. RBI's data localisation rules also apply. How would you design the multi-region setup?

Asked at

PaytmPhonePeRazorpay

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Answer out loud as you would in the room — clarify, give numbers, name the trade-off — then compare with the model answer.

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