New Service Integration Sequence Diagram illustrates a four-phase authentication and data flow pattern: SSO login, service launch, token validation, and CRUD operations. End users authenticate via an external service that redirects to a centralized SSO/Auth system, which issues tokens passed through to the new service backend. The new Admin UI (SPA) embeds within the external Admin UI frame, then exchanges SSO tokens with the Backend API before executing data operations against the Database. This architecture demonstrates secure service-to-service integration with centralized identity management, reducing credential sprawl and enforcing consistent authentication across microservices. Fork this diagram on Diagrams.so to customize SSO providers, add additional services, or adapt the sequence for your multi-tenant platform. The red-bordered Phase 3 highlights the critical SSO token validation step that protects API endpoints.