Do you ever wonder how Aadhaar data belonging to more than 1.32 billion Indian citizens is stored? How the generation of one million Aadhaar numbers is achieved by performing 600 trillion matches in a day? Have you ever wondered how 100 million authentications are undertaken; establishing the identity of a person by UIDAI in a day?

This article aims to provide answers to these questions. Along the way, this article will enumerate the requirement of Aadhaar and the two essential tasks of the UIDAI, i.e. enrollment and authentication. UIDAI has leveraged big data technologies like open scale-out, open-source, cheap commodity hardware, distributed computing technologies, etc. in handling and processing vast amounts of data.

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