The kind of payment system that should be integrated on the e-commerce site are payment methods that accept credit cards, debit cards, digital wallets, PayPal, Apple Pay, Google Pay and mobile payment methods including Buy Now, Pay Later services.
You should also consider factors such as transaction fees, security features and the ease of integration of the payment system.
The best payment Gateways for e-commerce websites and online stores and business include PayPal, Square, Authorize.net, Shopify Payments and Stripe.
Multiple payment gateway integrations are a good solution to have, especially for large online stores that sell globally.
Having multiple payment gateways for your online store enables the customers to choose their preferred method of payment, no matter where they're located or their financial institution.