Acumatica has a solid solution for ERP and CRM that is both a client's on-premises site and in the cloud – with their cloud part being Windows Azure based. Acumatica software is same in cloud as it is on-premise and experimenting with in on site is supposed to make accounts more comfortable with idea of using it in cloud. Designed specifically for cloud using SQL Server and .NET, Acumatica's widgetry is targeted at mid-market, who’re not ready to take on SAP. Acumatica offers three modules: an accounting package, distribution package and a CRM package and says that unlike NetSuite it's got one flat price regardless of number of users. It also claims that unlike NetSuite it doesn't charge for features; customers get same feature set; and its widgetry can be customized, NetSuite's can't. Any programming is done in C Sharp whereas NetSuite uses a proprietary language. And unlike NetSuite, Acumatica is using Azure, not its own infrastructure, for scalability, availability and replication.
More info: Azure Cloud on Utilizer