sentences:  Modern ESB architectures combine the benefits of centralized control with distributed, parallel data flow, giving application developers the ultimate flexibility in defining the network topology of choice to route data directly and optimally between services.Ensuring that data flowing between services does not always have to traverse a central point in the network optimizes peer-to-peer network performance.For instance, if one has a process that requires data exchanges between New York and Boston, as well as between San Francisco and Los Angeles, then the two flows of data don’t necessarily have to traverse a messaging hub located in Chicago (which is often the case in most enterprise or cross-enterprise deployments).