Shopify has a built-in payment gateway called Shopify Payments, which is powered by Stripe, but it's not available in every country. If you want to use Stripe instead, you can set up a Shopify Stripe integration through 5 steps, including searching for Stripe, selecting it, logging in, connecting to Stripe, and testing the integration. Alternatively, you can use Zapier to connect Shopify and Stripe in a more customizable way. The choice between using Shopify Payments or integrating Stripe depends on your location, existing payment setup, and automation needs. Both options have their own fees, with Stripe charging 2.9% plus $0.30 per transaction and Shopify adding an extra 2% processing fee for third-party payment processors.