Developed and delivered a new Composite Service Levels Entity Type within the newrelic/entity-definitions repository, focusing on enhancing service level management and monitoring capabilities. The work involved configuring YAML definitions to introduce the new entity type, refining ownership details, and removing ambiguous golden metrics to streamline implementation and reduce confusion. By establishing clear traceability through documentation and commit alignment, the changes support governance and future enhancements. The technical approach emphasized backend development and service level management, leveraging YAML configuration to ensure scalability and maintainability. This foundational update enables more effective categorization and oversight of service levels across the monitored systems.