What is India Stack? IndiaStack is a set of APIs that allows governments, businesses, startups and developers to utilise an unique digital Infrastructure to solve India’s hard problems towards presence-less, paperless, and cashless service delivery. The Open API team at iSPIRT has been a pro-bono partner in the development, evolution, and evangelisation of these APIs and systems. Technology layers The four distinct technology layers provided are Presenceless layer : Where a universal biometric digital identity allows people to participate in any service from anywhere in the country. Paperless layer : Where digital records move with an individual's digital identity, eliminating the need for massive amount of paper collection and storage. Cashless layer : Where a single interface to all the country's bank accounts and wallets to democratize payments. Consent layer : Which allows data to move freely and securely to democratize the market for data. APIs included in India Stack The following APIs are considered to be a core part of the India Stack. Aadhaar Authentication Aadhaar e-KYC eSign Digital Locker Unified Payment Interface (UPI) Digital User Consent - still work in progress. The following APIs are also considered to be societal platforms built on similar principles like India Stack: GSTN - The Goods and Services Tax Network BBPS - The Bharat Bill Payment System ETC - Electronic Toll Collection (known under the brand FASTag) Utility Citizens : Brings millions of Indians into the formal economy by reducing friction. Software ecosystem : Fosters innovation to build products for financial Inclusion, healthcare & educational services at scale. Government : Brings a paradigm shift in the way government services are delivered in a transparent, accountable and leakage free model. Source : IndiaStack Portal