winform Application and ASP.NET Application with Single DB

Question

I want build windows From application with local sql sever database and asp.net mvc site with sql server database placed on hosting as a shared Database.

How to make the winform Application synchronize between its local database and the shared database on the hosting .

 

 Note/ ASP.NET MVC site and Database placed on Hosting not in local Network

 

What are the best practices to do that ?

 

Thanks in advance.