The complete Microsoft Certified: Azure Fundamentals study library — 11 lessons mapped to every domain and topic in the official exam guide. Free to read, no account needed.
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Microsoft Azure publishes exactly what the AZ-900 tests and how much each part is worth. Here it is — every domain, its weight, the topics inside it, and the lessons that cover them.
Cloud computing fundamentals: cloud models, the benefits of cloud services, and the IaaS/PaaS/SaaS service types. Official weighting 25–30%.
Azure's core architectural components and its compute, networking, storage, and identity/access/security services. Official weighting 35–40%.
Cost management, governance and compliance tooling, resource deployment and management tools, and monitoring. Official weighting 30–35%.
Reading every note front to back is the slowest way to pass. The exam is weighted, so your revision should be too — the blueprint above tells you exactly where the marks are.
Describe Azure architecture and services carries the most marks on the AZ-900, so it earns the most of your attention. Work down the blueprint from the heaviest domain to the lightest rather than starting at domain 1 and grinding forward.
Read each lesson once without stopping to memorise — you are building a map, not a memory. On the second pass, read only the "what's tested" and key-takeaway blocks. If a takeaway surprises you, that lesson goes back on the pile.
Cover a lesson's key takeaways and try to say them out loud from the heading alone. Recall you can produce under your own steam is the only recall that survives a timed exam; recognition on a re-read is not the same thing.
Finishing the notes is not the goal — scoring is. Move to AZ-900 practice questions early, then come back to the exact lessons your wrong answers point at. That loop is worth far more than a third read-through.