A payment gateway is an e-commerce application that authorizes direct payment processing for e-business. The payment gateway may be provided by a bank or its customer s, but can be provided by a specialized financial service provider as separate service, such as payment service provider. Payment gateway facilitates this transaction by transferring key information between payment portals such as web enabled mobile device, website and the front end processing. A payment gateway processor analyzes and transmits transaction data. Payment gateway authorizes the transfer of funds between buyers and sellers.