The answer is Azure Key Vault, the dedicated service for securely storing and managing secrets like database connection strings and API keys. Azure Key Vault is correct because it provides a centralized, cloud-based vault that encrypts sensitive data at rest and in transit, while offering fine-grained access control through Azure RBAC and access policies to ensure only authorized applications or users can retrieve secrets. On the AZ-900 exam, this question tests your understanding of core Azure security services, often appearing as a scenario where you must choose the right tool for protecting configuration data—a common trap is confusing Key Vault with Azure App Configuration, which manages non-sensitive settings. Remember that Key Vault is the “secret keeper” for anything you must keep confidential, like passwords or keys. Memory tip: think of Key Vault as a digital safety deposit box—only those with the right key (permissions) can open it.
AZ-900 Describe Azure management and governance Practice Question
This AZ-900 practice question tests your understanding of describe azure management and governance. 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 needs to store database connection strings and API keys securely, ensuring only authorized applications can access them. Which Azure service is designed for this?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Key Vault
Azure Key Vault is the correct service because it is specifically designed to securely store and manage secrets such as database connection strings, API keys, and certificates. It provides fine-grained access control via Azure RBAC and access policies, ensuring only authorized applications and users can retrieve secrets. This aligns directly with the requirement for secure, authorized access to sensitive configuration data.
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 Storage with encryption
Why it's wrong here
Azure Storage encrypts data at rest but is not purpose-built for secret management with access control policies.
✓
Azure Key Vault
Why this is correct
Key Vault is specifically designed for securely storing secrets, keys, and certificates with Azure AD-based access control.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Active Directory
Why it's wrong here
Azure AD manages identities and access — it doesn't store application secrets.
✗
Azure Policy
Why it's wrong here
Azure Policy enforces governance rules — it doesn't store or manage application secrets.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Key Vault with Azure Storage encryption, assuming that encrypting a storage account is sufficient for managing secrets, but Key Vault is the only service that provides centralized secret management with access policies and audit logging.
Detailed technical explanation
How to think about this question
Azure Key Vault uses hardware security modules (HSMs) to protect secrets and supports both software-protected and HSM-protected keys. It integrates with Azure Managed Identities, allowing applications to authenticate to Key Vault without storing credentials in code, which is a critical security best practice. In a real-world scenario, a microservices application can use a system-assigned managed identity to retrieve a database connection string from Key Vault at runtime, eliminating the need to hardcode secrets.
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.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-900 question in full detail.
Describe Azure management and governance — This question tests Describe Azure management and governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Key Vault — Azure Key Vault is the correct service because it is specifically designed to securely store and manage secrets such as database connection strings, API keys, and certificates. It provides fine-grained access control via Azure RBAC and access policies, ensuring only authorized applications and users can retrieve secrets. This aligns directly with the requirement for secure, authorized access to sensitive configuration data.
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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Question Discussion
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