Fernanda Montiellerma developed channel configuration templates and product feed management features for the Shopify/extensions-templates repository, focusing on enabling multi-channel onboarding and improving integration flexibility. She introduced example-de and example-us templates, along with new capabilities such as combinedListings and unlistedProducts, to enhance configurability for different sales channels. Her work standardized the productFeedManagement type per channel, supporting consistency and future extensibility across the platform. Using TOML and configuration management skills, Fernanda documented all changes to align with repository standards and ensure traceability. The depth of her contribution lies in establishing a scalable foundation for channel-specific product feed management.