Presented are concepts for configuring data communication with an application flow in an integration system, wherein various connection routes to an application flow may be offered to a client. By way of example, connection configuration information associated with an application flow may relate to a plurality of different connection routes that are available for the associated application flow. This connection configuration information may be dynamically maintained to reflect flow and connection route availability. When an application flow is requested by a client, the connection configuration information for that application flow may be provided to the client. This may enable the client to select a preferred route.