The document summarizes the operations of the Annapurna Dabbawala Company Ltd (ADC) in Mumbai, India. ADC employs over 5,000 dabbawalas who collect homemade lunches from people's homes and deliver them to office workers, accurately sorting and delivering over 200,000 lunch boxes per day with an error rate of just 1 in 16 million transactions. The color-coding system and relay distribution method allow dabbawalas, most of whom are semi-literate or illiterate, to accurately sort and deliver lunches using only manual logistics. Despite facing challenges from changing work patterns, ADC has maintained its operations through quality commitments and promotions of home cooking.