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Home/Questions/Cloud/Tools/Explain the difference between Service Principal and Managed Identity in Azure.

Explain the difference between Service Principal and Managed Identity in Azure.

Cloud/Toolseasy0.3 min readPremium

Architectural difference: Service Principal = app identity; client ID, tenant, secret/certificate; for automation, CI/CD, third-party. Managed Identity = Azure-managed; no secrets; tied to resource (VM, ADF, Function). System-assigned vs user-assigned. When: Managed Identity for...

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Frequency
Low
Asked at 1 company
Category
179
questions in Cloud/Tools
Difficulty Split
104E|27M|48H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Chubb

Why This Question Matters

This easy-level Cloud/Tools question appears frequently in data engineering interviews at companies like Chubb. While less common, it tests deeper understanding that distinguishes strong candidates.

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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.

Expert Answer
53 words

Architectural difference: Service Principal = app identity; client ID, tenant, secret/certificate; for automation, CI/CD, third-party. Managed Identity = Azure-managed; no secrets; tied to resource (VM, ADF, Function). System-assigned vs user-assigned. When: Managed Identity for Azure resources—simpler, no secret rotation. Service Principal for external, non-Azure, Terraform. Best practice: Prefer Managed Identity; rotate SP secrets.

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