A concise revision guide for the Microsoft AZ-900 Azure Fundamentals exam. It focuses on exam-critical points, common misunderstandings, and decision logic rather than technical configuration details. The book is structured as a chapter-by-chapter cheatsheet covering core cloud concepts, Azure architecture, and core services.
This document is a study cheatsheet for the Microsoft AZ-900 Azure Fundamentals exam, written for learners who want a quick revision guide. It focuses on exam-critical points, common misunderstandings, and decision logic rather than technical configuration details. The book is organized by chapters, each covering a major topic area of the exam.
The first chapter covers cloud concepts, including definitions of cloud computing, deployment models (public, private, hybrid), and spending models (operational vs. capital expenditure). It also explains key principles like elasticity, scalability, high availability, fault tolerance, and disaster recovery, along with the shared responsibility model and common misconceptions about cloud security and cost.
The second chapter moves to Azure architecture and core services. It describes Azure regions, region pairs, availability zones, subscriptions, resource groups, and management groups. It also introduces Azure Resource Manager (ARM) and explains how resource organization and placement affect cost, resilience, governance, and management.
The third chapter begins coverage of Azure compute services. It lists virtual machines, VM scale sets, Azure App Service, and Azure Functions, highlighting differences in control, responsibility, and scaling. The chapter notes that VMs require OS patching, App Service removes server management, and Functions are serverless.
The table of contents shows the remaining chapters cover networking, storage, identity and security, management and governance, monitoring tools, pricing and SLAs, and final exam scenarios. The document is intended as a reference for understanding service purposes and choosing the simplest correct answer on the exam.