“…In terms of maturity level, different development stages were identified (Figure 4): eight articles proposed concepts for further development [18,25,29,32,36,40,46,50]; two articles [32,41] related to the same project reported on the ongoing activities to elicit the requirements using an interactive design approach (i.e., 35 care receivers were actively involved in all phases of the project to validate the data detection and intervention services); eight articles proposed theoretical models and applied simulation techniques to validate them [19,23,35,44,52,53,58,59] (in some cases, real data were used such as from the London Ambulance Service [53] or data available for the 27,775 citizens living in Copenhagen [58]); eight articles defined architectures [24,27,31,40,48,49,55,56], and some of them were validated (e.g., some of the components of the architecture were implemented for its validation [24] or a simulation of a use case was performed for the conceptual validation of the architecture [56]); 14 articles presented prototypes that were developed to demonstrate the feasibility of the concepts [16,17,21,22,28,30,33,34,37,…”