What Cloud SQL Server Solutions Are There?

Hello,

I'm developing a WinForm-based ERP application using Visual Studio. Rather than purchasing a dedicated on-premises server just to host the database, does Microsoft provide a cloud alternative without limitations? If not, what reliable vendors can provide this service.

I need a solution that provides the following:-

1. As much control of the database as that on a dedicated on-premises server.
2. Accepts SQL connections from any Microsoft Platform (with user control of course) whether it isExcel, InfoPath or any Visual Studio - developed application.

Regards,

Seif