Commerce includes several built-in integrations with payment gateways that let your store accept various payment methods, including credit cards and PayPal payments.
In addition to the built-in integrations described in this section, you can use tools that Commerce provides to create custom integrations with other payment gateways. See Create a Credit Card Payment Gateway Integration for information about creating custom integrations for a number of payment gateways.
If you run multiple sites within a single instance of Commerce, each site can use different payment methods. The payment methods you configure are available to every site, but you can assign a different subset of them to each site. Each new site you create automatically inherits its payment methods from the default site, though you can change them on the Payment Processing page. See Configure Sites to learn how to create multiple sites.