Developed a new endpointUrl property for the ServiceAttachment resource in the GoogleCloudPlatform/magic-modules repository, enabling users to specify precise endpoints for service attachments and enhancing deployment reliability across cloud environments. Focused on backend development using Go and Terraform, the work included implementing comprehensive tests to validate endpoint connectivity and ensure seamless integration with existing configurations. Emphasized test-driven development and maintained backward compatibility, contributing to the stability and adoption of the module. Integrated changes with CI workflows to support robust cloud infrastructure management. No major bugs were addressed during this period, as efforts centered on feature delivery and extended test coverage.