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Microsoft · Fundamentals · AZ-900

AZ-900 Practice Exams & Study Guide

349 original practice questions across all three AZ-900 domains — every answer explained and backed by official Microsoft documentation. No dumps, no recycled braindumps — every answer is explained and linked to the exact official page behind it, so you learn why it's right.

Try 16 free questions Already own it? Start practicing

349

original questions

drag-and-drop & hotspot items

100%

questions with an official source link

Coverage follows the official AZ-900 blueprint

Official domain	Exam weight	Our questions
Describe cloud concepts	25–30%	57
Describe Azure architecture and services	35–40%	176
Describe Azure management and governance	30–35%	116

Weights from the official Skills Measured outline (2026-06-18). Question counts follow the blueprint — never padded to hit a number.

Judge the quality yourself

Sample question 1

Which of the following are examples of computing services that can be delivered through the cloud? (Select all that apply.)

a.On-site physical security personnel for your office
b.Virtual machines✓ correct
c.Storage✓ correct
d.Machine learning✓ correct

Why B, C, D: The cloud delivers the same building blocks as a traditional IT environment — virtual machines, storage, databases, networking — and extends into modern services like IoT and machine learning. All three of those are services delivered to you over the internet. (A) is the odd one out: physical security guards standing in your office are a real-world service, not something delivered as a cloud resource.

Sample question 2

A company runs its own private cloud but occasionally needs extra capacity for short-lived demand spikes. It wants to temporarily deploy public cloud resources during those spikes and release them afterward. Which cloud model best fits?

a.Hybrid cloud✓ correct
b.Public cloud only
c.Private cloud only
d.Multicloud

Why A: This "burst when you need it" pattern is what defines a hybrid cloud — a private cloud can temporarily expand into public cloud resources to absorb a spike, then release them when it passes. (B) and (C) lock the company into a single environment with no burst path, and D (multicloud) means using several public providers together, which isn't what's described — the company keeps its private cloud as the base.

Every explanation names why the right answer is right and what each wrong option actually refers to — that's the standard across all 349 questions. Try 16 of them free →

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Practice Exams

$10.90launch price · 12-month access

✓ 349 original questions across all 3 official domains
✓ All four exam formats: single, multi-select, drag-and-drop, hotspot
✓ Exam, Review and Section modes with a weak-area report
✓ Every answer explained and linked to the official Microsoft page behind it

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Complete Bundle

$13.90launch price · 12-month access

✓ Everything in Practice Exams
✓ The designed AZ-900 Study Guide (PDF), taught in learning order
✓ The Quick Recap card deck for last-mile review
✓ One purchase, complete preparation
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Study Guide + Quick Recap

$6.90launch price · 12-month access

✓ Designed AZ-900 Study Guide (PDF) with original diagrams
✓ Quick Recap card deck ending in a cram sheet
✓ Plain-English teaching around precise exam terms
See what's inside ↓

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Look inside the AZ-900 Study Guide

The real opening of Chapter 1 — how the whole guide teaches. The full guide continues like this, chapter by chapter, with original diagrams and verified questions woven in.

Chapter 1 · free excerpt

The cloud, and who does what

Before a single Azure service makes sense, two questions need answers: what does “the cloud” actually give you, and where does Microsoft's job end and yours begin? Almost everything else in this guide is stacked on top of these two ideas — so we start here, and we keep pointing back.

Strip away the jargon and cloud computing is one idea: renting computing power over the internet instead of owning it. The familiar building blocks are all there — virtual machines, storage, databases, networking — alongside higher-order capabilities like analytics, the Internet of Things, machine learning, and AI. What changes is where they come from: a provider's datacenter you reach over a network, rather than hardware you buy, rack, power, and maintain yourself.

That sounds like a plumbing detail, but its first consequence is financial. In the old world you paid a large sum up front for equipment you hoped to grow into — a capital expenditure (CapEx). The cloud flips this to an operational expenditure (OpEx): you pay for what you use, as you use it. Guess your capacity too high in the CapEx model and you've bought servers that sit idle; guess too low and your apps slow down. The cloud's pay-as-you-go billing removes the guess — you add resources when demand climbs and release them when it falls.

Mental model

It's the difference between buying a generator and plugging into the grid. A generator is yours to size, fuel, and repair whether or not you use it. The grid bills you only for the electricity you draw — and someone else keeps the power station running. That “someone else” is the thread running through this whole chapter.

Figure 1.1 — The responsibility line, and how it climbs. Read left to right: with on-premises you own the whole stack; each step toward SaaS hands another layer to the provider. The three bands at the very top never move, no matter the service type.

Worked example

Your team needs to run a custom web app, and you're choosing how to host it. Put it on a virtual machine and you're in IaaS: you patch the operating system, install and update the language runtime, and keep the app running — every rung above the OS line is yours. Put the same app on Azure App Service (a PaaS offering) and Microsoft patches the OS and runtime for you; you deploy just your code and mind your data and access. Identical application, two very different amounts of work kept — that's the ladder doing its job. (You'll build both in Chapter 4.)

Excerpt ends here — the full chapter continues with the five workloads in depth, exam traps, and verified practice questions.

Quick Recap — two of the AZ-900 cards

A landscape card deck for last-mile review, ending in a Cram Sheet. One chapter card and one of the four Cram Sheet cards:

Chapter card

Shared responsibility

You always own your data, identities, devices. Microsoft always owns the physical layer. Everything between shifts with the service type.

Cram sheet · 1 of 4

Must-memorize numbers

3: copies of your data in the primary region (Ch 6)
3: minimum availability zones per AZ-enabled region (Ch 3)
~300 mi: minimum region-pair distance, same geography (Ch 3)
6: levels a management group can nest (one parent) (Ch 3)
< 15 min: typical geo-replication RPO — possible data loss (Ch 6)
3–24: storage-account name length (lowercase + numbers) (Ch 6)
80 TB: Azure Data Box usable capacity (Ch 6)
30 / 90 / 180: min. retention days — Cool / Cold / Archive (Ch 6)
90% / 100%: credit-alert thresholds (Enterprise Agreement) (Ch 9)
3: MFA factor categories: know / have / are (Ch 7)
7: defense-in-depth layers (physical → data) (Ch 8)
5: Azure Advisor recommendation categories (Ch 12)

What the designed PDFs look like

Real pages from the files you download — the polish is part of what you're paying for.

The no-dumps promise

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