The answer is Azure Dedicated HSM. This service is the correct choice because it provides a single-tenant, FIPS 140-2 Level 3 validated hardware security module for generating and storing cryptographic keys, giving you exclusive, dedicated control over the physical appliance. Unlike Azure Key Vault, which is a multi-tenant software-based service, Dedicated HSM ensures that no other tenant shares the hardware, making it essential for compliance and high-security workloads that require strict key isolation. On the AZ-900 exam, this question tests your ability to distinguish between shared and dedicated security services; a common trap is confusing Dedicated HSM with Key Vault, but remember that Key Vault is for standard key management while Dedicated HSM is for hardware-level, single-tenant control. For a memory tip, think “Dedicated HSM = Dedicated Hardware” — if the scenario demands exclusive, tamper-resistant hardware for cryptographic key storage, choose Dedicated HSM.
AZ-900 Describe Azure architecture and services Practice Question
This AZ-900 practice question tests your understanding of describe azure architecture and services. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
Which Azure service provides a dedicated hardware security module (HSM) for generating and storing cryptographic keys?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Dedicated HSM
Azure Dedicated HSM provides a single-tenant, FIPS 140-2 Level 3 validated hardware security module that is fully under your control, allowing you to generate and store cryptographic keys in a dedicated appliance. Unlike Key Vault, which is a multi-tenant software-based service, Dedicated HSM gives you exclusive access to the HSM hardware for compliance and high-security workloads.
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.
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Azure Key Vault Premium tier (which uses HSM-backed keys but is still multi-tenant) with Azure Dedicated HSM (which provides a single-tenant, dedicated hardware appliance), leading them to select the Premium tier thinking it offers the same isolation.
Detailed technical explanation
How to think about this question
Azure Dedicated HSM is based on Thales Luna Network HSM 7 appliances, which are FIPS 140-2 Level 3 validated and support PKCS#11, JCE, and Microsoft CryptoNG interfaces. Under the hood, each HSM is provisioned in your own virtual network (VNet) with no shared tenancy, meaning you have full administrative control over the device, including firmware updates and key management policies. A real-world scenario is a financial institution requiring PCI DSS compliance that must isolate cryptographic operations to a dedicated, auditable hardware boundary.
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 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 Dedicated HSM — Azure Dedicated HSM provides a single-tenant, FIPS 140-2 Level 3 validated hardware security module that is fully under your control, allowing you to generate and store cryptographic keys in a dedicated appliance. Unlike Key Vault, which is a multi-tenant software-based service, Dedicated HSM gives you exclusive access to the HSM hardware for compliance and high-security workloads.
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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