We can create Application for Windows.
Data is loaded and saved to Database on Cloud by accessing Web Server.
Application uses same access with Web Browser. So, you can use Application in secured network inside of Firework as long as you can access Web Page.
There are many options for Windows Application about how to save data but this is our option to save data on Cloud.
Before the Cloud technology comes, it was common to install physical Database Server in your office but you don't need to make Database Server in your office. You don't need Shared File Server in your office.
You may look complex as this diagram but actually our DegoDB manages most of the part to simplify structure.
Otherwise you can put dedicated server in your office with SQL Server or use SQL Server on Microsoft Azure Cloud as an alternative.
This is our Development Framework and Cloud Database