The answer is the DeployIfNotExists effect. This is the correct choice because it automatically remediates non-compliant resources by triggering a deployment task that adds the missing 'CostCenter' tag with a default value, ensuring continuous compliance without manual intervention. On the Microsoft Azure Solutions Architect Expert AZ-305 exam, this scenario tests your understanding of Azure Policy effects for governance automation, often appearing in questions about enforcing tagging standards at scale. A common trap is confusing DeployIfNotExists with the Audit effect, which only reports non-compliance without fixing it, or with Modify, which can also remediate but is limited to altering existing properties rather than deploying full ARM templates. Remember: DeployIfNotExists is your go-to when you need to automatically deploy a resource or configuration—like a default tag—when a condition is not met. Memory tip: "DeployIfNotExists deploys what's missing, Audit just tells you it's missing."
AZ-305 Practice Question: Design identity, governance, and monitoring solutions
This AZ-305 practice question tests your understanding of design identity, governance, and monitoring solutions. 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 uses Azure Policy to enforce tagging on resources. The security team reports that some resources are missing the required 'CostCenter' tag. You need to ensure that any resource created without the required tag is automatically remediated by adding the tag with a default value. What should you configure in Azure Policy?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
DeployIfNotExists effect
The DeployIfNotExists effect is correct because it automatically remediates non-compliant resources by deploying a tag with a default value when the required 'CostCenter' tag is missing. This effect triggers a deployment task that adds the tag, ensuring continuous compliance without manual intervention.
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.
✓
DeployIfNotExists effect
Why this is correct
DeployIfNotExists evaluates resources and triggers a remediation task to add the missing tag.
Related concept
Read the scenario before looking for a memorised answer.
✗
AuditIfNotExists effect
Why it's wrong here
AuditIfNotExists only reports compliance state; it does not remediate.
✗
Append effect
Why it's wrong here
Append can modify the resource during creation but does not remediate resources already created without the tag.
✗
Deny effect
Why it's wrong here
Deny blocks creation of non-compliant resources but does not remediate existing ones.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Append (which only works during creation/update) with DeployIfNotExists (which can remediate existing resources), leading them to choose Append for automatic remediation of all resources.
Detailed technical explanation
How to think about this question
Under the hood, DeployIfNotExists uses a linked ARM template or a built-in definition to deploy a remediation task via Azure Policy's 'remediation' feature, which runs on a schedule or on-demand. This effect is ideal for scenarios where you want to enforce tagging on both new and existing resources, as it can be triggered by a policy assignment's 'remediation task' that evaluates and fixes non-compliant resources at scale.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-305 question in full detail.
Design identity, governance, and monitoring solutions — This question tests Design identity, governance, and monitoring solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: DeployIfNotExists effect — The DeployIfNotExists effect is correct because it automatically remediates non-compliant resources by deploying a tag with a default value when the required 'CostCenter' tag is missing. This effect triggers a deployment task that adds the tag, ensuring continuous compliance without manual intervention.
What should I do if I get this AZ-305 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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Question Discussion
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