AZ-900 Study Guide: Pass Azure Fundamentals

What the AZ-900 exam actually is

AZ-900 (Microsoft Azure Fundamentals) is Microsoft's entry-level cloud certification. It is a broad, concept-first exam that checks whether you understand what the cloud is, what Azure offers, and how organizations control cost, security, and compliance. You are not asked to write code or click through the portal under a timer. You are asked to recognize the right service and the right principle for a given situation.

This guide is independent third-party study material. Skills Tech Certified is not affiliated with, endorsed by, or sponsored by Microsoft. Always confirm current objectives and pricing on Microsoft's official pages before you book.

Who it is for

AZ-900 is designed for a wide audience: students, career switchers, salespeople, project managers, and technical people who want a shared vocabulary before deeper certifications. There are no prerequisites. If you can explain the difference between renting and buying, you already understand the core idea of cloud economics that the exam builds on.

The three domains you must know

• Describe cloud concepts: shared responsibility, public/private/hybrid models, and the difference between IaaS, PaaS, and SaaS. Know the benefits (scalability, elasticity, reliability, high availability) and the money side (capital vs operating expense, consumption-based pricing).
• Describe Azure architecture and services: regions, availability zones, resource groups, subscriptions, and management groups, plus core services for compute (Virtual Machines, App Service, Azure Container Instances, Azure Kubernetes Service, Functions), networking (Virtual Network, load balancing, VPN, ExpressRoute), storage (Blob, tiers, redundancy), and identity (Microsoft Entra ID, authentication vs authorization).
• Describe Azure management and governance: cost tools (Pricing calculator, Total Cost of Ownership calculator, Cost Management, tags), governance and compliance (Azure Policy, resource locks, the Service Trust Portal), and the tools you manage with (portal, CLI, PowerShell, Cloud Shell, Azure Arc) plus monitoring (Azure Monitor, Advisor, Service Health).

How to prepare

Start by reading each objective aloud and turning it into a question you could answer in one sentence. Then create the free Azure account and click through the portal so the names become concrete: make a resource group, deploy a small storage account, open Cost Management, and browse Azure Policy. Seeing the console once is worth several pages of notes. Finish each study block with a few recall questions rather than passive re-reading.

How long it takes

Most motivated beginners are ready in one to three weeks of focused study, often 15 to 25 total hours. If you already work in IT, a weekend of review may be enough. If cloud is brand new, give yourself the full three weeks and lean on hands-on clicking to make abstract terms stick.

How to know you are ready

You are ready when you can explain shared responsibility without notes, place any core service into its category, and describe how a company would control spend and enforce policy in Azure. If you can teach those three domains to a friend in plain language, the exam will feel familiar. Before you book, it is worth checking where you stand against every objective so you spend your last hours on the gaps that matter.