A system and method for generating and/or managing virtual network(s) is provided. The system provides an interface for end-user(s) to create a virtual network (e.g., on-demand). The virtual network comprises a plurality of servers that allow the user to, for example, develop and/or test software, migrate applications, apply tasks and/or troubleshoot scenarios in a simulated, distributed environment.A user can communicate with the system via an interface (e.g., web-based) to create and/or manage the virtual network. Additionally, the system can employ a common infrastructure to facilitate creation and/or management of a variety of virtual deployment configurations. The common infrastructure can be designed, for example, by administrator(s) having knowledge of hardware and/or software available for employment within the virtual network.The system can further provide a load-balancing mechanism to determine and/or distribute workload to computer(s) with available resource(s). Additionally, the system can expire virtual session(s) that are no longer in use thereby releasing resources for other user(s) and/or session(s).