Merchants should test: Successful orders Failed transactions Refunds Partial fulfillment Cancellations

Test orders verify checkout, payment gateways, taxes, shipping, and email notifications.

Businesses should configure: Payment authorization Customer information fields Store policies Order fulfillment settings

Shopify Payments removes additional transaction fees and simplifies payout management.

Shopify supports: Shopify Payments PayPal Stripe alternatives Third-party gateways

Carrier-calculated shipping automatically calculates shipping fees using carrier APIs based on dimensions and weight.

Shipping zones define where products can be delivered and determine applicable rates.