Developed and delivered an Adyen payment gateway integration for the spree/spree repository, enabling merchants to configure and accept Adyen payments within Spree Commerce. The work included creating a dedicated integration and configuration page, adding new assets, and producing comprehensive documentation and setup guidance in Markdown to streamline onboarding. Focused on integration and documentation skills, the implementation expanded checkout capabilities and reduced friction for end users. No major bugs were reported or fixed during this period. The contribution addressed the need for broader payment options, supporting merchant revenue growth and improving the overall flexibility of the Spree Commerce platform.