Free AZ-900 practice exam: everything you need to know before the test
Format, official domains, cost, and how to practice with real questions before taking the AZ-900 Azure Fundamentals exam. Includes study guide, deep dive, and Brains4Cloud practice exam.
The AZ-900 (Microsoft Azure Fundamentals) is the most common entry point into the cloud world: it requires no prior experience and certifies that you understand basic cloud concepts and Azure's core services. It's the perfect exam if you're coming from another IT area, just starting out in cloud, or need the certification as a requirement for a role or partnership.
What you need to know about the exam
| Questions | ~40-60 (multiple choice, drag-and-drop, case studies) |
| Duration | 45 minutes |
| Reference cost | USD 99 (check the current price for your country on Microsoft's official page) |
| Passing score | 700 out of 1000 (scaled) |
| Validity | Does not expire |
| Prerequisites | None |
Official domains and their weight
| Domain | Approximate weight |
|---|---|
| Describe cloud concepts | 25-30% |
| Describe Azure architecture and services | 35-40% |
| Describe Azure management and governance | 30-35% |
Weights are based on Microsoft's public blueprint and may be adjusted — always confirm the current version before scheduling your exam.
The architecture and services block is the largest: it covers IaaS, PaaS, and SaaS, compute (VMs, containers, functions), networking, storage, and databases. The management block covers Azure Policy, RBAC, monitoring with Azure Monitor, and cost models like CapEx vs OpEx.
Common mistakes that make people fail the AZ-900
- ▸Memorizing definitions without understanding the "why." The exam asks about scenarios ("which service would you use to...?"), not dictionary definitions.
- ▸Skipping governance and compliance. It's almost a third of the exam, and many people underestimate it because it sounds "administrative."
- ▸Not practicing with the real format. Drag-and-drop and multi-select questions feel different from reading documentation — you only master them by practicing.
How to prepare with Brains4Cloud
Instead of jumping straight into scattered theory, we follow a path with three complementary pieces:
- ▸Complete AZ-900 guide — summarizes the three domains with practical examples and direct links to the glossary for every term that might confuse you.
- ▸AZ-900 Deep Dive — if you already have the basics, here we go concept by concept with diagrams and decision tables, topic by topic.
- ▸Interactive AZ-900 labs — practice directly in a guided environment, no need for your own Azure account or risk of incurring costs.
- ▸Practice exam simulator — original questions (no brain dumps), with an explanation of why each option is correct or incorrect, in the same format and pace as the real exam. Create your free account and take your first practice exam.
Frequently asked questions
Is the AZ-900 hard if I've never used Azure? No, it's designed for that. What does help is spending a few hours in the Azure portal before the exam so the terms stop sounding abstract — our labs cover exactly that.
How much should I study? Between 2 and 4 weeks with a few hours of dedication per week is usually enough for most technical profiles.
Does the AZ-900 serve as a foundation for AZ-104 or AZ-305? Yes, although it's not a formal prerequisite, the AZ-900 lays the terminology and architecture groundwork that AZ-104 and AZ-305 later take for granted.
If you're looking to go beyond the AZ-900, also check out our AZ-104 guide — the natural next step once you have the fundamentals down.
Put what you learned to the test
Original practice exams with detailed explanations. No brain dumps.