Glossary

What is Digital Public Infrastructure?

Shared digital systems for identity, payments and data exchange, built and run as public goods. They let governments, businesses and citizens deal with each other on open standards that work together.

Digital Public Infrastructure (DPI) is the set of shared digital systems, such as digital identity, payment rails and data exchange, that are built, maintained and governed as public goods. DPI lets governments, businesses and individuals pay, prove who they are and share data on common, open standards instead of closed, proprietary systems.

Updated June 2026· 5 min read

Quick Facts

Abbrev.: DPI
Core layers: ID, Payments, Data
Key example: India Stack
G20 goal: Global DPI expansion

The Three Core Layers of DPI

Digital Identity

A way to check who someone is online while protecting their privacy. Examples: India's Aadhaar and the EU's eIDAS. The other DPI layers build on it.

Payment Rails

Payment systems that work across banks and providers. Examples: India's UPI, Brazil's PIX, the EU's SEPA. They open up real-time digital finance to citizens.

Data Exchange

Secure ways to share data across agencies and sectors, based on consent. Examples: DEPA (India), NHS data framework (UK), Gaia-X (EU).

Service Delivery

The digital channels that deliver government services. These include portals, mobile apps and API gateways that open DPI functions to service providers.

The India Stack Model

India's DPI is known as the India Stack. It is one of the most comprehensive examples. Built over a decade, it includes:

Aadhaar — India's biometric digital identity system
UPI — Unified Payments Interface, India's real-time payments system
DigiLocker — document sharing between citizens and agencies, based on consent
ONDC — Open Network for Digital Commerce, an open e-commerce protocol
ABDM — Ayushman Bharat Digital Mission, for health data exchange

India's DPI is widely credited with cutting leakage, fraud and administrative costs. It is often cited as a demonstration of what shared digital rails can do at the scale of a whole population.

How AI Agents Integrate with DPI

AI agents can integrate with DPI through its standard APIs, subject to the authorisations each system requires. They use the identity layer to verify what a citizen claims. They use the data exchange layer to retrieve authorised records. They use payment rails to confirm financial history.

For example, an AI agent handling a benefit application could verify identity, retrieve tax records, check payment history and assess eligibility in seconds. These systems used to sit apart, and joining them up by hand could take weeks.

SynaptxCloud designs and builds agentic AI systems to order. We can build agents to integrate with DPI systems such as India Stack and EU eIDAS, subject to the authorisations each system requires. Our approach is for government AI agents to work within existing digital infrastructure instead of replacing it.

Frequently Asked Questions

Q1What are the three core layers of Digital Public Infrastructure?

Most DPI frameworks name three core layers. The first is digital identity, a way to check who someone is while protecting their privacy. Examples are Aadhaar and eIDAS. The second is payment rails, payment systems that work across providers. Examples are UPI, PIX and SEPA. The third is data exchange, secure and consent-based ways to share data between individuals, government agencies and private sector services. Examples are DEPA and the NHS data framework. Some frameworks add a fourth layer, service delivery. This covers the channels and portals that bring these functions to end users.

Q2What is the difference between DPI and e-Government?

E-government means government services delivered digitally, such as online applications, digital forms and e-filing. DPI is the infrastructure underneath that makes e-government possible. It also supports digital commerce, digital health and digital finance. DPI is to digital services what roads are to physical trade. It is the shared foundation that others build on. One key difference is who uses it. DPI is designed for the private sector and civil society as well as government, on open standards that work together.

Q3Which countries have the most advanced Digital Public Infrastructure?

Several countries lead on DPI. In India, the India Stack (Aadhaar, UPI, DigiLocker and ONDC) is one of the world's most comprehensive DPI ecosystems. In Estonia, digital identity and X-Road have supported near-complete digital government since the early 2000s. In Brazil, PIX has become one of the world's fastest-growing payment systems. In Singapore, SingPass and MyInfo are widely used by citizens. The G20 has committed to expanding DPI globally.

Q4How do AI agents integrate with Digital Public Infrastructure?

AI agents can integrate with DPI through its standard APIs, subject to the authorisations each system requires. They use digital identity to verify what a citizen claims. They reach authorised data through consent-based data exchange. They check payment rails for financial history. For example, an AI agent could verify identity, retrieve tax records, check payment history and assess eligibility in seconds. Joining these systems up by hand could take weeks. SynaptxCloud can build agents to integrate with DPI systems such as India Stack and EU eIDAS, subject to the authorisations each system requires.

Related Terms

AI agents designed to work with your DPI

We can build AI agents to integrate with India Stack, eIDAS and other DPI systems, subject to the authorisations each system requires. We design them to reach the data they need with consent and audit controls.