Azure Storage is Microsoft's cloud storage solution for modern data storage scenarios. Azure Storage offers a massively scalable object store for data objects, A file system service for the cloud, a messaging store for reliable messaging, and A NoSQL store. Azure Storage is: Durable and highly available.
Microsoft Azure SQL Database
Microsoft azure SQL is a database that runs on a cloud computing platform, and access to it is provided as a service. Managed database services take care of scalability, backup, and high availability of the database.