This Recommendation specifies the architecture and functional components needed for the provisioning of packaged IPTV application (widget) service. Widgets are lightweight applications@ provided with a simple and easily accessible GUI@ which commonly provide a single functionality (e.g.@ calendars@ feed aggregators@ etc.) and might stay persistently exhibited. The widget service definition relies on the interoperability and harmonization provided by IPTV multimedia application frameworks (MAFRs) [ITU-T H.760]. The scope of the recommendation comprises the definition of the IPTV packaged application model and the definition of essential service components such as service discovery@ packaging@ metadata and security. The target terminal device types range from the basic model as specified in [ITU-T H.721] to fullfledged terminal devices@ which are defined in [ITU-T H.722].