Mobile banking allows customers to access and manage their bank accounts through a mobile application from anywhere. It is a system that permits users to perform financial transactions via a mobile device. The document discusses Kotak Mahindra Bank, an Indian private sector bank that was the first company in India to convert to a bank. It also mentions HDFC Bank and some of the services it offers through mobile banking like UPI payments, money transfers, cards, recharges and bill payments. The document is signed off by Ankita, a Marketing Executive in Unit 2.