DFD Level 0 for a multi-tenant mobile exam application shows five core processes: tenant management, user administration, content curation, exam execution, and grading. Data flows from four external actors—Super Admin, School Administrator, Teachers, and Students—through processes that interact with four databases: User, Material, Questions, and Answers. This architecture demonstrates role-based access control and separation of concerns, critical for scalable SaaS education platforms serving multiple schools. Fork this diagram on Diagrams.so to customize for your institution's workflows, add AWS service mappings, or export as .drawio for integration into technical documentation.