The answer is to use Azure Key Vault references in App Service configuration and Azure Key Vault variables in Azure DevOps release pipelines. These two practices work together to secure secrets in Azure App Service DevOps pipelines by ensuring sensitive values like connection strings or API keys are never stored in source code or build artifacts. Key Vault references use the syntax @Microsoft.KeyVault(SecretUri=...) within App Service application settings, allowing the platform to resolve secrets directly from the vault at runtime, while Azure DevOps Key Vault variables fetch secrets during pipeline execution without exposing them in YAML or logs. On the Microsoft Cybersecurity Architect exam, this scenario tests your understanding of secret injection versus static configuration—a common trap is choosing “encrypted configuration files” or “environment variables in code,” which still risk exposure in the repository. Remember the mnemonic “KV-Refs at runtime, KV-Vars at build time” to distinguish the two layers of protection.
SC-100 Design a strategy for data and applications Practice Question
This SC-100 practice question tests your understanding of design a strategy for data and applications. 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 is designing a secure DevOps pipeline for deploying Azure App Service applications. They need to ensure that secrets are not exposed in source code. Which TWO practices should they implement?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use Azure Key Vault references in App Service application settings
Option A is correct because Azure Key Vault references allow App Service to securely retrieve secrets (e.g., connection strings, API keys) at runtime without storing them in source code or configuration files. The reference syntax @Microsoft.KeyVault(SecretUri=https://myvault.vault.azure.net/secrets/mysecret/) is resolved by the App Service platform, ensuring secrets are never exposed in the repository or build artifacts.
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.
✓
Use Azure Key Vault references in App Service application settings
Why this is correct
Secrets retrieved at runtime from Key Vault.
Related concept
Read the scenario before looking for a memorised answer.
✗
Implement Git pre-commit hooks to scan for secrets
Why it's wrong here
Not a built-in Azure solution.
✗
Store secrets in Azure DevOps library variable groups
Use Azure Key Vault variables in Azure DevOps release pipelines
Why this is correct
Variables linked to Key Vault secrets.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse Azure DevOps library variable groups (which can be linked to Key Vault) with the direct use of Key Vault references in App Service settings, but the question specifically asks for practices that prevent secret exposure in source code, and variable groups still store the secret reference in the pipeline definition, which can be exposed in logs or YAML files.
Detailed technical explanation
How to think about this question
Azure Key Vault references work by injecting a managed identity (system-assigned or user-assigned) into the App Service, which authenticates to Key Vault via OAuth 2.0 and retrieves the secret value at runtime. The reference is stored in the app settings as a special string that the App Service runtime resolves before the application starts, ensuring the secret never appears in the deployment package or environment variables. In a real-world scenario, if a developer accidentally commits a Key Vault reference string (not the secret itself) to source code, it is safe because the reference alone cannot be used without the appropriate managed identity and access policies.
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 cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-100 question in full detail.
Design a strategy for data and applications — This question tests Design a strategy for data and applications — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use Azure Key Vault references in App Service application settings — Option A is correct because Azure Key Vault references allow App Service to securely retrieve secrets (e.g., connection strings, API keys) at runtime without storing them in source code or configuration files. The reference syntax @Microsoft.KeyVault(SecretUri=https://myvault.vault.azure.net/secrets/mysecret/) is resolved by the App Service platform, ensuring secrets are never exposed in the repository or build artifacts.
What should I do if I get this SC-100 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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