Our company is using Azure Table Storage - http://www.microsoft.com/windowsazure/pricing http://www.microsoft.com/windowsazure/pricing - $0.15/mo It's great if

Our company is using Azure Table Storage - http://www.microsoft.com/windowsazure/pricing http://www.microsoft.com/windowsazure/pricing - $0.15/mo It's great if you can live with it not being relational. SQL Azure is their 'SQL Server in the cloud' and is a bit more. But the sharding possibilities are great. You can programmatically turn on/off db instances on demand.