Microsoft Graph Tenant Relationships

Microsoft Graph Tenant Relationships is the part of the Microsoft Graph API that lets you model and manage how your Microsoft Entra ID tenant relates to other tenants. It provides endpoints to discover external tenants, create and govern delegated admin relationships (GDAP) between partners and customers, manage membership in a multi-tenant organization, and access managed tenants data used by Microsoft 365 Lighthouse. By centralizing these cross-tenant connections, it enables service providers and enterprises to automate onboarding, scope and assign permissions, monitor relationship status, and streamline operations and collaboration across many tenants in a consistent, policy-driven way.