Developed foundational API definitions for managing resource relationships within Azure, focusing on the Microsoft Relationships Resource Provider in the mikeharder/azure-rest-api-specs repository. The work introduced new relationship types such as 'dependencyOf' and 'serviceGroupMember', along with their associated management operations, to support richer integration and governance across Azure resources. Leveraging TypeSpec and OpenAPI, the developer created specification files that enable consistent relationship management and set the stage for public preview stability. The technical approach emphasized clarity and extensibility, using TypeScript and API specification best practices to ensure future enhancements and seamless integration with Azure Resource Manager workflows.