After seeing the initial growth of transaction via online shopping, bill payments, recharges, scan and pay for offline transactions, Amazon Pay is now starting UPI-enabled P2P transactions for consumers.
With banking facility, Amazon will join the league of UPI-powered P2P transactions providers such as BHIM, Paytm, Google Pay, PhonePe, among others. After Google, Amazon will be the second offshore player to get P2P transfer licence. (Source)