I have this argument with people a lot. I'm surprised that nobody talks about serving multiple applications from the same service layer. Sure, you can have a we

I have this argument with people a lot. I'm surprised that nobody talks about serving multiple applications from the same service layer. Sure, you can have a web app and then a separate API for mobile clients, but why not just have a RESTful interface that can be used by all of them? This doesn't necessarily mean that you can't still do server-side views if you wanted to. But by separating the view rendering from the service layer you provide a bit more flexibility. Designed correctly, the argument becomes moot. Either you're creating a controller, models, and event callbacks on the server, or you're creating them on the client. Client-side javascript frameworks are getting so much better that it really just comes down to finding the best tools for your team.