1Cloud Concepts

• 1.1Cloud Computing and Its Benefits

  Understand what cloud computing is and its key benefits—high availability, scalability, elasticity, reliability, predictability, security, governance, and manageability. This is the starting point for AZ-900.

• 1.2Cloud Service Types and the Shared Responsibility Model

  Understand the three service models—IaaS, PaaS, SaaS—through a single axis: the trade-off between control and effort. Compare what each one manages, its representative Azure services, and where it fits, and see where serverless (FaaS) sits. Finally, learn the most important security concept in the cloud—the shared responsibility model—via a layer-by-layer responsibility matrix.

• 1.3Cloud Deployment Models and Consumption-Based Pricing

  Understand the deployment models—public, private, hybrid, multi-cloud—and the ideas of CapEx vs OpEx and consumption-based pricing.