Security and Compliance: A trustworthy payment gateway should be PCI-DSS compliant, encrypt transaction data, and offer fraud detection features to protect customers' sensitive information. Secure payment processing builds customer trust and helps prevent financial losses.

Multiple Payment Options: A good payment gateway supports various payment methods, including credit/debit cards, digital wallets, and even local payment options. Offering flexibility in payment options enhances customer convenience and can increase conversions.

Seamless Integration and User Experience: The payment gateway should integrate smoothly with your website or app, providing a simple, reliable checkout experience. Features like one-click payments, mobile optimization, and customizable design can improve user satisfaction and reduce cart abandonment.