A payment gateway as a bourgeois service that processes MasterCard payments for e-commerce sites and ancient brick and mortar stores. Common payment gateways embody PayPal/Brain tree, Stripe, and Square. Encryption: Between the user’s browser and therefore, the server of the merchandiser, a payment gateway can inscribe (encode for personal use) knowledge for exclusive use between vendor and emptor.

Request: The authorization request happens once a payment processor gets approval from a MasterCard company or institution to proceed with the dealings. Self-actualization: once the payment gateway has the endorsement, it allows the website and interfaces to proceed to supplant action.