Network routing and load balancing in a software design network (SDN)-enabled computing environment may be provided. Input data discovered from a source computing environment is received, wherein one or more of components of the source computing environment are to be migrated to a target computing environment, the input data comprising at least source configuration information and utilization information. Target compute resources, network design and system management design may be determined based on the input data, and a new network configuration generated as output. Based on these design decisions, the steady-state network management using SDN is proposed. The new network configuration may be transmitted to an SDN controller associated with the target computing environment for storing as flow table rules. The SDN controller pushes the flow table rules to one or more routing switches, the flow table rules for performing the network routing and the load balancing.