Now in general availability Azure Key Vault automated key rotation. Schedule automated rotation from a rotation policy and set up expiry notifications using Event Grid.
This means end-to-end zero-touch key rotation is available for Azure services data encryption using customer-managed key stored in Azure Key Vault.
About Azure Key Vault
Key Vault is available within Azure starting from a free account. It allows you to safeguard cryptographic keys or other secrets which are used by cloud applications and services.
The immediate benefit is the increase in control and therefore security over your keys, passwords, secrets etc. This is achieved through applications having no direct access to the keys, built-in encryption, the ability to monitor and audit your key use and many other features. Such as the new automated key rotation feature.