The summary provides an overview of the Dabbawala system in Mumbai: The Dabbawala system started in 1890 when a Parsi banker employed someone to deliver home-cooked food to his workplace. This evolved into a system run by the Nutan Mumbai Tiffin Box Suppliers Association involving over 5,000 Dabbawalas who use a complex coding system to collect, transport, and deliver over 200,000 tiffin carriers per day with nearly zero errors. The Dabbawalas have received international recognition for their efficient operations and customer satisfaction.