Some embodiments provide a method that defines a user interface (UI) that displays several UI elements representing several virtual machines deployed in a particular configuration for a particular user in a hosting and storage system that includes several nodes for hosting user specified virtual machines. The method receives input from the user through the UI to save the particular configuration of virtual machines. For each virtual machine in the particular configuration, the method stores an image of the virtual machine. The method stores data representing the particular configuration of virtual machines. The data includes references to the stored images of the virtual machines and connections between the virtual machines.