SQL Server redirect - Migration to new server

Hi,

We are decommissioning an old SQL server 2008 and I want to redirect all incoming request to a newly created server 2014.

Problem definition: I cannot just change the connection string of already deployed addin application. I need to reinstall the application with new server connection for each user. So to buy myself some time I 'm trying toredirect the incoming request to new server- how do i do it?

What my best bet – should I set up a linked server connection on my old server and point the request to new server?

Or is there a clever way?

Thank

S