A mechanism is provided in a data processing system for providing portable composite solutions. The mechanism deploys a set of virtual images for a plurality of components of a composite solution to a build environment to form a set of virtual machines. The mechanism deploys a network virtual image to the build environment to form a network virtual machine. The network virtual machine comprises a router. The mechanism configures the router to create a private subnet with a set of fixed addresses and set of host names for the composite solution. Optionally, the mechanism may discover the fixed addresses during the build phase. The mechanism optionally installs middleware components to the set of virtual machines for the composite solution to form a set of solution virtual machines. The mechanism captures the set of solution virtual machines as a set of solution virtual images as a portable composite solution.