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4.2.1. Storage Account Access Control
💡 First Principle: Storage accounts support multiple authentication methods. The method you choose affects security posture and management complexity.
Authentication Methods
| Method | Description | Use Case |
|---|---|---|
| Microsoft Entra ID | Identity-based access | Users and applications with Entra identity |
| Shared Key | Account key authentication | Legacy applications |
| Shared Access Signature (SAS) | Delegated, limited access | External parties, time-limited access |
| Anonymous | No authentication | Public content (rare) |
⚠️ Exam Trap: Relying on shared keys for production applications. Shared keys provide full account access and cannot be scoped. Use Microsoft Entra ID or SAS with minimal permissions.
Written byAlvin Varughese
Founder•15 professional certifications