**Why Managed Identities**: No passwords, keys, or secrets to manage. Azure AD-backed identity for Azure resources. Eliminates credential rotation and leakage. **Types**: System-assigned (tied to resource lifecycle) and User-assigned (reusable across resources). **Use cases**:...
This easy-level Cloud/Tools question appears frequently in data engineering interviews at companies like Fractal. While less common, it tests deeper understanding that distinguishes strong candidates. Mastering the underlying concepts (sql) will help you answer variations of this question confidently.
Start by clearly defining the core concept being asked about. Interviewers want to see that you understand the fundamentals before diving into implementation details. Structure your answer with a definition, then explain the practical application with a concise example.
Why Managed Identities: No passwords, keys, or secrets to manage. Azure AD-backed identity for Azure resources. Eliminates credential rotation and leakage. Types: System-assigned (tied to resource lifecycle) and User-assigned (reusable across resources). Use cases: ADF accessing Storage/Key Vault; Function App accessing SQL; VM accessing Blob. Use DefaultAzureCredential in code—tries Managed Identity first, then env vars. Scalability: User-assigned can be shared; system-assigned is per-resource. Cost: No cost. Best practice: Prefer managed identity over connection strings. Grant minimal RBAC (e.g., Storage Blob Data Contributor for specific container). Use Key Vault references in ADF with managed identity for secret retrieval.
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Analyze My Answer — FreeAccording to DataEngPrep.tech, this is one of the most frequently asked Cloud/Tools interview questions, reported at 1 company. DataEngPrep.tech maintains a curated database of 1,863+ real data engineering interview questions across 7 categories, verified by industry professionals.