The Unified Payments Interface (UPI), which has been a remarkable success story in India’s digital revolution, suffered its third outage in a month, leading to chaos at shops, malls and restaurants, hitting small traders and vendors hard. Users were left hanging while making payments, and there was utter confusion for a few hours. The system, which was launched in 2016, has become critical to millions of Indians, who effortlessly migrated from traditional methods of payment to adopt UPI. One of the most user-friendly and seamless transaction systems, it has been rated as the world’s most popular alternate payment........

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