The document discusses how Paytm, India's largest mobile commerce platform, uses data science. It outlines Paytm's business model of providing mobile recharging, bill payments, e-commerce marketplace, digital wallet, and other services. Paytm focuses on data science to detect fraud, understand customer behavior, perform predictive analytics, and make marketing and business decisions. The company's data science team uses techniques like Hadoop, text mining, and social media analysis. Lessons learned are that data science helps Paytm understand consumers and cope with fraud while increasing products.