Application Transition

I appreciate your quick response. We would care which they are going to because they are a pretty dramatic look and feel change. We would need to figure out a seed of some sort to start with and then some method to increase the cut over in a controlled way. We would want them always to get the new app once they are there. We would also need to be able to distribute the users of either application to three different data centers with some control over the load to each data center as well. As I look the F5 products I wonder if this would be possible using a combination of the global product and the local product and how it could be done with minimal alteration to the applications themselves. Today we are using a round robin DNS distribution in to a competing local load balancer network.