SQL Azure

Microsoft Azure SQL Database (part of the Azure Services Platform) is a cloud-based Microsoft data storage service similar to Amazon Relational Database Service (RDS). Making it easy to set up, scale and operate relational databases in the cloud, SQL Database is extremely elastic in scaling and provides excellent availability, allowing its users to make relational queries to structured, semi-structured and even unstructured data. Other features include data querying, analysis, synchronization and search.