Big Bazaar began as weekly markets and village fairs and has evolved through various retail formats over time. It started as traditional local stores meeting daily needs, then the government supported PDS and cooperatives to make products affordable. Modern formats now include hypermarkets, supermarkets, and department stores that provide new shopping experiences. Big Bazaar emerged as India's largest hypermarket by understanding customer preferences through its product selection, store layout and discounts. It faces challenges from taxation differences between large and small retailers as well as high real estate and supply chain costs, but addresses these through efficiency improvements and strategic expansion.