Features on demand.

This paper presents our vision of applications as feature clouds, providing software services that are composed dynamically from a set of available fine-grained features. Our feature cloud programming model realizing this vision, relies on context-oriented programming technology, enabling new or adapted features to be added to or removed from running applications on demand, according to contextual information, and taking into account feature dependencies. As a proof of concept, we implemented a prototype of an on-board car system running on a mobile device, using an instantiation of our feature clouds programming model for JavaScript.