Digital Public Infrastructure (DPI)

📖 What Digital Public Infrastructure means

Digital Public Infrastructure (DPI) refers to foundational, interoperable digital systems — built as public goods — that enable identity verification, payments, and data exchange at population scale, upon which both government and private players can build services. India's DPI approach, often called the "India Stack," has become a globally referenced model, including being showcased during India's G20 presidency.

🆔 The three layers of the India Stack

• Identity layer — Aadhaar: a 12-digit biometric-linked unique identity number issued by the Unique Identification Authority of India (UIDAI), enabling paperless, remote identity verification (e-KYC).
• Payments layer — UPI (Unified Payments Interface): built by the National Payments Corporation of India (NPCI), enabling instant, interoperable bank-to-bank payments via a single mobile app — now among the world's largest real-time payment systems by volume.
• Data layer — Account Aggregator (AA) framework: a consent-based system allowing individuals to securely share their own financial data (bank statements, tax records) between institutions, without the data passing through a central repository.

🏛️ Governance-relevant applications

DPI underpins several major governance reforms: Direct Benefit Transfer (DBT), which routes subsidies directly into Aadhaar-linked bank accounts (reducing leakage); DigiLocker, for storing and sharing verified digital documents; and the broader JAM Trinity (Jan Dhan bank accounts + Aadhaar + Mobile), which together enabled DBT at national scale.