The client/server architecture that powers much of the web is evolving. Full stack, monolithic, apps are becoming a thing of the past as new requirements have forced us to think differently about how we build apps. New client/server architectures create a clear separation of concerns between the server and the client. As developers, we have the ability to create the new abstractions that will power the web. Understanding the past, present, and future of the client/server help us to become more active participants in the future ecosystem for building web applications.