Last updated: April 29, 2026
Azure Key Vault stores keys, secrets, certificates. Managed Identity integration is the win.
What goes in Key Vault
- Keys (cryptographic; can be HSM-backed in Premium tier)
- Secrets (passwords, connection strings, API keys)
- Certificates (managed lifecycle)
Access models
- Vault Access Policy — legacy; granular per-vault
- RBAC — modern; consistent with rest of Azure
RBAC is recommended for new deployments.
Managed Identity pattern
App registers system-assigned managed identity. Identity granted “Key Vault Secrets User” RBAC role. App fetches secrets via DefaultAzureCredential. No secrets in code.
HSM tier
Premium tier provides HSM-backed keys (FIPS 140-2 Level 2). For higher: Managed HSM (FIPS 140-2 Level 3).
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