About This Domain
Domain 2 — Describe Azure Architecture and Services — accounts for 35-40% of the AZ-900 certification exam. This domain evaluates your understanding of azure regions, region pairs, availability zones, and sovereign regions, azure resources, resource groups, subscriptions, and management groups, azure compute services: vms, app service, aci, aks, functions, and virtual desktop, and related concepts. Domain 2 covers Azure core architectural components and services including compute, networking, storage, and databases. To pass this section you need practical knowledge of how these services and patterns work together in real-world architectures.
What You'll Be Tested On
- Azure regions, region pairs, availability zones, and sovereign regions
- Azure resources, resource groups, subscriptions, and management groups
- Azure compute services: VMs, App Service, ACI, AKS, Functions, and Virtual Desktop
- Azure networking: Virtual Network, subnets, peering, VPN, ExpressRoute, DNS, and Firewall
- Azure storage services: Blob, Files, Queue, Table, tiers, and redundancy options
Key Azure Services in This Domain
Study Strategy for Domain 2
At 35-40% of the exam, this is the highest-weighted domain — invest proportionally more study time here. Focus on hands-on labs and scenario-based questions. Aim to answer at least 80% of Domain 2 questions correctly in practice tests before sitting the real exam.
Exam Tips for Domain 2
Azure regions contain one or more data centers; availability zones are physically separate locations within a region.
Resource groups are logical containers that cannot be nested.
Management groups can be nested up to 6 levels deep.
Know the difference between VPN Gateway (encrypted over internet) and ExpressRoute (private connection).
Frequently Asked Questions
How many questions on the AZ-900 exam come from Domain 2?
Domain 2 (Describe Azure Architecture and Services) makes up 35-40% of the AZ-900 exam. The exam has 65 scored questions, so approximately 23 questions will come from this domain.
What services should I focus on for Domain 2?
The key services for this domain include Azure Architecture, Compute, Networking, Storage, Databases, Monitoring. Make sure you understand how each service works, its use cases, and how they integrate with one another.
How should I prepare for Describe Azure Architecture and Services questions?
Start by reviewing the key topics listed above, then practice with domain-specific questions. Focus on understanding real-world scenarios rather than memorizing facts. Use our practice quizzes to test your knowledge and review explanations for any questions you get wrong.
What's the best order to study the AZ-900 domains?
Many candidates start with the highest-weighted domains first. For the AZ-900 exam, the domains in order of weight are: Describe Cloud Concepts (25-30%), Describe Azure Architecture and Services (35-40%), Describe Azure Management and Governance (30-35%). However, start with whichever domain aligns best with your existing experience.
Practice Domain 2 Questions
Test your knowledge of Describe Azure Architecture and Services with practice questions from our AZ-900 question bank.
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