Azure / Foundational / AZ-900
Azure Fundamentals
Understand Azure service categories, cloud value and governance. Start with the foundation chapter, then revise the mapped service distinctions.
Shared service chapters include administrator-level detail. For AZ-900, prioritise service purpose, responsibility and the distinctions in this objective map; deployment syntax is extra depth.
THE REVISION PATH
Your topics, in order.
Read. Recall. Explain the alternative.
Cloud Concepts and the Azure Service Map
Choose the responsibility model, failure boundary and service purpose before remembering product names.
Subscriptions, Policy and Cost Governance
RBAC decides who may act; Policy evaluates what configuration is acceptable.
Microsoft Entra ID and Azure RBAC
Entra identifies the principal; Azure RBAC authorises an action at a scope.
Storage Access, Encryption and Redundancy
Network reachability, authorisation and encryption are separate storage controls.
Virtual Machines, Disks and Scale Sets
Size for the bottleneck, place for failure and distinguish stopped from deallocated.
App Service and Container Platforms
Separate image storage, execution, application configuration and the hosting plan.
Virtual Networks, Routes and Secure Access
Check the effective route and the effective rule in both directions.
DNS and Load Balancing
DNS answers names; Layer 4 forwards connections; Layer 7 routes application requests.
Azure Monitor, Logs and Alerts
Metrics quantify, logs explain, traces connect and alerts start a response.
How this guide is organised
Original revision notes arranged around practical decisions. The linked official objectives define the mapped scope; primary documentation supports the explanations. Read each topic, answer without looking, then explain why another option would fail.
- Official exam guide ↗ Scope authority
Revision material supports preparation; it does not guarantee every possible exam question. Check the exam version and official objectives before booking.