The Microsoft Azure Fundamentals (AZ-900) exam is an entry-level certification designed to validate foundational knowledge of cloud concepts and how those concepts are implemented on Microsoft Azure. The actual exam questions are structured around several key areas: Cloud Concepts, Azure Architecture and Services, and Azure Management and Governance. A significant portion of the questions, particularly in the "Cloud Concepts" section, focuses on fundamental definitions. For example, you can expect scenario-based questions that require you to distinguish between Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). Other questions test your understanding of core cloud principles like scalability, high availability, and the shared responsibility model, often asking you to identify which of these concepts is being described in a given scenario.