A payment gateway as a merchant service that processes credit card payments for ecommerce sites and traditional brick and mortar stores. Popular payment gateways include PayPal / Viva wallet and more.
Making it easier for your customer
Let customers choose what they want when they want it.
Using a payment gateway that allows Visa and MasterCard will cover many of your bases.

Additionally, abandonment surveys report that some of the top reasons for abandoning a shopping cart can be addressed in the quality of your gateway:

-15% abandon the shopping cart for a better in-store experience.
-6% abandon due to a lack of payment options.
-4% abandon due to technical issues.