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AI-era systemsMediumSDE-2

Your fintech app wants to send customer chat messages to a third-party LLM to draft replies. Messages contain names, phone numbers, PAN and account numbers. How do you design the PII handling?

Asked at
CREDPaytmPhonePePolicyBazaar

Think first

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

Go deeper

Design an LLM gateway with failover and budgets Lesson: What changes when an LLM is in the system

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