Quick-reference summary — for full depth, see our detailed UPSC notes.
The "India Stack" has three layers: Aadhaar (identity, via UIDAI), UPI (payments, via NPCI), and the Account Aggregator framework (consent-based data sharing). Together with Jan Dhan and Mobile (the JAM Trinity), this enabled Direct Benefit Transfer at national scale.
This national-framework topic is identical for APPSC as it is for UPSC — for the full deep-dive with all the detail, follow the link above.
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