Abstract: Methods and apparatus are provided for maintaining state information in an event driven thin client environment. A server-based method is provided for updating a presentation in an event driven, thin client device, comprising the steps of detecting a new presentation event; and sending a notification call to the client device containing information related to the presentation event to be recorded in a data model on the client device. A client-based method is provided for updating a presentation in an event driven, thin client device, comprising the steps of receiving a new presentation event from an application controller on an application server; and updating a local data model on the client device with information related to the presentation event. In addition, the presentation on the client device can optionally be updated based on the information related to the presentation event.