Azure Active Directory (AAD) is the correct Azure service integration for managing role-based access control within Azure Databricks. AAD is Microsoft's cloud-based identity and access management service, offering authentication and authorization for users and applications. Integrating Azure Databricks with AAD allows for the assignment of roles and permissions to users and groups, ensuring that only authorized individuals can access specific resources and perform certain actions. This integration supports the creation of custom roles tailored to the responsibilities and requirements of users or groups, facilitating the implementation of role-based access control (RBAC). AAD also centralizes the management of user identities, authentication, and authorization, simplifying the enforcement of security policies and compliance within Azure Databricks. In essence, AAD integration provides a secure and efficient method for managing access control based on roles in Azure Databricks.