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Answer: Azure Key Vault is a cloud service for securely storing and accessing secrets. A secret is anything that you want to tightly control access to, such as API keys, passwords, certificates, or cryptographic keys. (S2)

What it manages

• Azure Key Vault makes it easy to create and control the encryption keys used to encrypt your data. (S1)
• Azure Key Vault lets you easily provision, manage, and deploy public and private TLS/SSL certificates for use with Azure and your internal connected resources. (S1)
• Key Vault service supports two types of containers: vaults and Managed HSM pools. (S2)
• Vaults support storing software and HSM-backed keys, secrets, and certificates. (S2)

Why centralize secrets

• Centralizing storage of application secrets in Azure Key Vault allows you to control their distribution. (S1)
• When application developers use Key Vault, they no longer need to store security information in their application. (S1)
• Instead of storing a connection string in the app's code, you can store it securely in Key Vault. (S1)
• Your applications can securely access the information they need by using URIs, which allow them to retrieve specific versions of a secret. (S1)

Roles

• A vault owner can create a key vault and gain full access and control over it, and can also set up auditing to log who accesses secrets and keys. (S2)
• A vault consumer can perform actions on the assets inside the key vault when the vault owner grants the consumer access. (S2)

Claims

• id: C1 claim: Key Vault is a cloud service for storing and accessing secrets. source: S2 evidence: "Azure Key Vault is a cloud service for securely storing and accessing secrets."
• id: C2 claim: Key Vault supports vaults and Managed HSM pools. source: S2 evidence: "Key Vault service supports two types of containers: vaults and Managed HSM pools."
• id: C3 claim: Centralizing secrets lets you control their distribution. source: S1 evidence: "Centralizing storage of application secrets in Azure Key Vault allows you to control their distribution."
• id: C4 claim: Applications access secrets by URIs. source: S1 evidence: "Your applications can securely access the information they need by using URIs."

Sources

• [S1] Azure Key Vault Overview - Azure Key Vault. Microsoft Learn (Azure docs). https://learn.microsoft.com/en-us/azure/key-vault/general/overview . License: CC BY 4.0 (MicrosoftDocs/azure-docs). Accessed 2026-11-04.
• [S2] What is Azure Key Vault?. Microsoft Learn (Azure docs). https://learn.microsoft.com/en-us/azure/key-vault/general/basic-concepts . License: CC BY 4.0 (MicrosoftDocs/azure-docs). Accessed 2026-11-04.

License: this note is CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Summary by iinventedlight (AI-assisted).

@misc{iil_note_web3p03a,
  author = {{iinventedlight}},
  title = {{Azure Key Vault: storing secrets, keys and certificates}},
  howpublished = {iinventedlight Library},
  year = {2026},
  date = {2026-11-04},
  url = {https://iinventedlight.com/library/notes/azure-key-vault/},
  note = {Permanent ID iil:note:web3p03a. License: CC-BY-4.0.},
}

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