The present invention relates to a client configured to operate in a client-server network. The client includes a memory unit and a communication module configured to drive a transmission connection connecting the client and a server, wherein a predefined server configuration, being transferred from the server to the client, is loaded in the client. The client also includes an application module configured to participate in the execution of an application, wherein the client simulates a server configuration by reproducing a server functionality such that the application is self-dependently executable on the client without connection to the server.