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Services are normally composed following a structured model, or based on a particular goal that needs to be fulfilled. Such model is problematic for pervasive environments, since service components deployed in the environment are unknown beforehand. As a result, services may never execute due to the unavailability of one of the pre-specified components, or components missing to fulfill the service goal. This paper posits a new vision for service composition by inverting the control flow ofdoi:10.1145/2986012.2986016 dblp:conf/oopsla/Cardozo16 fatcat:le5ptzfgjnfy5ljtg7swmmbte4