India needs highly scalable solutions and ‘public goods’ should act as a key enabler for building such solutions. IndiaStack is one such emerging system, which entrepreneurs and startups should embrace. Presence-less, paperless, cashless Service Delivery for a Billion people is a very big task. The large-scale systems needed to cost-effectively deliver such a solution would only be built with the combined participation of all parties, including government bodies and private companies or startups. The government systems will enable critical capabilities made available to entrepreneurs who could build diverse set of Apps useful in reaching the services to a wide mass of people through mobile phones.