Methods, devices and systems for providing a user interface in an on-demand software service environment are described. Some implementations involve receiving an indication of a component definition to instantiate. The component definition may be a portion of a component definition data structure. Such implementations may also involve instantiating the provided component, instantiating all remaining attributes of the component definition data structure to produce a component instance data structure and transmitting an intermediate representation of the indicated component to a client device. The intermediate representation may comprise a version of the component instance data structure. The intermediate representation may allow the client device to create an instance of the component in memory.