There are three differences b/w
server.transfer and response.redirect
1. Server.Transfer transfers page processing from one page directly to the next
page without making a round-trip back to the client's browser while
response.redirect make a round-trip.
2. By using Response.redirect, you can navigate from one site to other site
while with server.transfer, it is not possible.
3. Server.Tranfer maintain values of previous page while Response.redirect does
not maintain this