Eventually, as technology costs lowered and design patterns continued to advance to more sophisticated levels, a new style of architecture became popular: client server applications. The monolith still existed to provide the backend processing power and data storage required. However, because of advances in networking and database concepts, a frontend application, or client, was used to provide a user experience and transmit data to the server. The client application is still tightly coupled with the server application. However, it allows for potentially many clients connecting into the server and therefore distributing the application to a field workforce or public users on the internet. This evolution of the modular approach also changed the way IT departments deployed and maintained systems, with different groups responsible for the client and server components, and skill sets started to specialize and focus on how to further drive efficiencies.