Scalable object model design is described. In an embodiment, one or more objects corresponding to a form are instantiated in response to a request for the form from a first client device, and an events manager is instantiated through which the one or more objects register to process data manipulation events associated with the form. Data specific to the first client device is processed with the one or more objects that correspond to the form via a first processor thread. An additional request from a second client device is received and additional data specific to the second client device is processed with the one or more objects that correspond to the form via a second processor thread. The one or more objects are shared by the first client device and the second client device to process the data manipulation events associated with the form.