Embodiments of the present invention provide methods, system and machine-readable media for dynamic configuration and/or support for application using multiple modes and/or devices. Generally speaking, dynamic configuration and/or support for an application using multiple modes and/or devices can comprise accessing a multimodal and/or multi-device application via a user agent of a user device. The user agent can determine a plurality of modes or devices supported by the application and request multimodal services based on the modes or devices supported by the application. A multimodal/multi-device infrastructure communicatively coupled with the user agent can be adapted to register components of a multimodal service in a central repository. In response to the request for multimodal services from the user agent of the user device, the multimodal/multi-device infrastructure can locate services supporting the one or more modes or devices based on the registered components of the multimodal service in the central repository.