Encryption scopes in Azure Storage now generally available

Encryption scopes enable you to provision multiple encryption keys to manage encryption at the container or blob level.  Customers and ISVs can now use a single storage account for multi-tenancy scenarios by provisioning separate encryption keys for each customer. The key that protects an encryption scope may be either a Microsoft-managed key or a customer-managed key in Azure Key Vault. 
Source: Microsoft Azure – aggiornamenti