SQL Server is used for Database.
We use our Development Framework by following Small Development Package.
With this combination, first option is to put server on your office but you can use "Azure" Database Server by Microsoft Colud.
If server is put into your office, your staff needs to be assinged to manage server.
If Cloud is used, your staff can manage server. On the other hand, the cloud can manage by our service.
If you delegate server management to us, it follows Small Development Package and Database Service but plan must be more than "Colud" plan.
This is our Development Framework and Cloud Database