Quick Answer
The answer is Azure App Configuration, the correct choice because it is purpose-built for centralized management, versioning, and hierarchical storage of application settings and feature flags, enabling cloud-native applications to access configuration without hard-coding values. Unlike Azure Key Vault, which is strictly for secrets and certificates, App Configuration provides a dedicated, low-latency store for non-sensitive configuration data, supporting snapshots and key-value versioning for rollback and auditability. On the AZ-305 exam, this question tests your ability to differentiate between configuration and secrets management—a common trap is confusing Key Vault for all settings, but remember that Key Vault handles secrets, while App Configuration handles config. A useful memory tip: think of App Configuration as the “settings app” for your microservices, where each key-value pair is a tunable knob, not a locked vault.
This AZ-305 practice question tests your understanding of design infrastructure 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.
You need to design a solution to store configuration data for a cloud-native application. The configuration must be centrally managed, versioned, and accessible to multiple services without hard-coding values. Which Azure service should you use?
Azure App Configuration
App Configuration is designed for managing application settings.
Azure Cosmos DB
Why wrong: Cosmos DB is a NoSQL database.
Azure Blob Storage
Why wrong: Blob Storage is for files, not configuration.
Azure Key Vault
Why wrong: Key Vault is for secrets, not configuration.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure App Configuration
Option A is correct. Azure App Configuration provides centralized management, versioning, and access for application settings. Option B is wrong because Azure Key Vault is for secrets, not configuration. Option C is wrong because Azure Cosmos DB is a database, not a configuration store. Option D is wrong because Azure Blob Storage is for unstructured data.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure App Configuration
Why this is correct
App Configuration is designed for managing application settings.
Related concept
Static NAT maps one inside address to one outside address.
Azure Cosmos DB
Why it's wrong here
Cosmos DB is a NoSQL database.
Azure Blob Storage
Why it's wrong here
Blob Storage is for files, not configuration.
Azure Key Vault
Why it's wrong here
Key Vault is for secrets, not configuration.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
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
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-305 NAT questions on configuration and troubleshooting.
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FAQ
Design infrastructure solutions — This question tests Design infrastructure solutions — Static NAT maps one inside address to one outside address..
The correct answer is: Azure App Configuration — Option A is correct. Azure App Configuration provides centralized management, versioning, and access for application settings. Option B is wrong because Azure Key Vault is for secrets, not configuration. Option C is wrong because Azure Cosmos DB is a database, not a configuration store. Option D is wrong because Azure Blob Storage is for unstructured data.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-305 NAT questions on configuration and troubleshooting.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 20, 2026
This AZ-305 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-305 exam.
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