Digital Payment Systems Market by Type (Bank Cards, Unstructured Supplementary Data Service (USSD), Mobile wallets, Internet Banking, PoS (Point of Sale), Others), Industry Verticals (Banking Sector, Transportation Industry, Retail Industry, Telecommunications Industry, Others), Device (Smartphones, Tablets, Laptops, Others), Solution (Payment Wallet, Payment Gateway, Payment Security, Payment Processing) Players and Region - Global Market Outlook to 2027