- A
Azure Policy
Why wrong: Azure Policy is used to enforce rules and compliance on resources (e.g., allowed regions, resource types). It does not define or deploy infrastructure resources like VMs or storage accounts. Therefore, it is incorrect for this scenario.
- B
Azure Resource Manager (ARM) templates
ARM templates are declarative JSON files that define Azure resources and their dependencies. They handle creation order automatically, support parameters for multi-environment reuse, and are the native infrastructure-as-code tool for Azure. This matches all requirements in the scenario.
- C
Azure Blueprints
Why wrong: Azure Blueprints packages ARM templates, policies, and role assignments together for a standardized environment. While Blueprints can contain ARM templates, the question specifically asks for a declarative JSON file that defines resources in correct order with parameters. The core component that fulfills this is the ARM template itself, not the Blueprint orchestration service.
- D
Azure Automation State Configuration
Why wrong: Azure Automation State Configuration (DSC) is used to manage the configuration and desired state of existing virtual machines (e.g., installing software, registry settings). It does not deploy infrastructure resources like networks or storage accounts, making it unsuitable for this scenario.
Quick Answer
The answer is Azure Resource Manager (ARM) templates. This is the correct choice because ARM templates are the native Azure feature for infrastructure as code using a declarative JSON format, allowing you to define all resources like virtual networks and storage accounts in a single file. They automatically handle resource dependencies through the `dependsOn` element, ensuring correct creation order, and support parameterization so the same template can deploy to dev, test, and production environments with different values. On the AZ-900 exam, this question tests your understanding of Azure’s native IaC tool versus third-party options like Terraform or Ansible; a common trap is choosing Azure Blueprints, which focus on policy and compliance rather than declarative JSON resource deployment. Remember the mnemonic “ARM Deploys JSON” to recall that ARM templates are the native declarative JSON solution for automated, dependency-aware deployments.
AZ-900 Describe Azure architecture and services Practice Question
This AZ-900 practice question tests your understanding of describe azure architecture and services. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A company plans to use an infrastructure-as-code approach to deploy its Azure resources. The company wants to define all resources (virtual networks, virtual machines, storage accounts) in a declarative JSON file. This file must ensure that resources are created in the correct order, handle dependencies automatically, and allow the same configuration to be deployed to multiple environments (dev, test, production) with parameterized values. The solution should be a native Azure feature. Which Azure feature should the company use?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Resource Manager (ARM) templates
Azure Resource Manager (ARM) templates are the native Azure feature for infrastructure-as-code using a declarative JSON format. They define resources, handle dependencies automatically via the 'dependsOn' element, and support parameterization for deploying the same template to multiple environments (dev, test, production) by passing different parameter files. This directly matches the scenario's requirements for declarative JSON, dependency management, and multi-environment deployment.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Azure Policy
Why it's wrong here
Azure Policy is used to enforce rules and compliance on resources (e.g., allowed regions, resource types). It does not define or deploy infrastructure resources like VMs or storage accounts. Therefore, it is incorrect for this scenario.
- ✓
Azure Resource Manager (ARM) templates
Why this is correct
ARM templates are declarative JSON files that define Azure resources and their dependencies. They handle creation order automatically, support parameters for multi-environment reuse, and are the native infrastructure-as-code tool for Azure. This matches all requirements in the scenario.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Azure Blueprints
Why it's wrong here
Azure Blueprints packages ARM templates, policies, and role assignments together for a standardized environment. While Blueprints can contain ARM templates, the question specifically asks for a declarative JSON file that defines resources in correct order with parameters. The core component that fulfills this is the ARM template itself, not the Blueprint orchestration service.
- ✗
Azure Automation State Configuration
Why it's wrong here
Azure Automation State Configuration (DSC) is used to manage the configuration and desired state of existing virtual machines (e.g., installing software, registry settings). It does not deploy infrastructure resources like networks or storage accounts, making it unsuitable for this scenario.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Azure Blueprints (which bundles multiple ARM templates and policies) with the core declarative JSON file itself, but the question specifically asks for the feature that defines resources in a declarative JSON file and handles dependencies—which is the ARM template, not the Blueprint wrapper.
Trap categories for this question
Scenario analysis trap
Azure Policy is used to enforce rules and compliance on resources (e.g., allowed regions, resource types). It does not define or deploy infrastructure resources like VMs or storage accounts. Therefore, it is incorrect for this scenario.
Detailed technical explanation
How to think about this question
ARM templates use a declarative syntax where resource dependencies are either explicitly defined via the 'dependsOn' property or implicitly inferred by the Resource Manager engine when a resource references another resource's name or ID (e.g., a VM referencing a subnet ID). The template is processed by the Azure Resource Manager REST API, which validates the JSON schema, resolves parameters, and orchestrates resource creation in the correct order, including parallel creation of independent resources for efficiency.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this AZ-900 question test?
Describe Azure architecture and services — This question tests Describe Azure architecture and services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Resource Manager (ARM) templates — Azure Resource Manager (ARM) templates are the native Azure feature for infrastructure-as-code using a declarative JSON format. They define resources, handle dependencies automatically via the 'dependsOn' element, and support parameterization for deploying the same template to multiple environments (dev, test, production) by passing different parameter files. This directly matches the scenario's requirements for declarative JSON, dependency management, and multi-environment deployment.
What should I do if I get this AZ-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
This AZ-900 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-900 exam.
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