How to make Test Drive/Online demo of an application

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Thanks in advance,


I have an application which is developed using
Front end Tool: Visual Studio(vb.net).
Back end Tool: Sql server.
Reporting Tool: Crystal Reports.

Now most of clients want online Demo, Is there any way this can be achieved, i have demo builder but its more like a video demo, Is there any software by using which user can
use it like can do CRUD operations, is there any cloud solution or any thing else ?
i can upload my database on FTP server and then, any chance?