Previously, the app was only on the client. You interact with the server through an API but the app was on your local computer. Now, with the isomorphic approach, the app is actually residing on the server and on your clan. If one of these is slow, the other would step up and as a result, your overall experience would be smooth. This is definitely a very interesting approach and it would be nice to see this in action. Anything that would make the internet usage more seamless and smooth should be a development that any internet user must warmly welcome.