**5. Conclusions and future works**

The KMoS-RE© strategy is a novel approach from KM in order to face the challenges of eliciting knowledge and creatively transform it into a set of requirements of a product or solution in order to satisfy the needs and fulfil whole expectations of clients and users. The strategy is focused on dealing with ISD. Due to the characteristics of these domains, the strategy has a full KM perspective, i.e. it incorporates knowledge engineering techniques in order to properly manage tacit knowledge. The *domain modelling phase* handles the problem of formalizing the concepts and relationships; at least a consensus about it is reached. The *system modelling phase* deals with the problem of structuring the processes in the domain. Thus, the problem of handling tacit knowledge has addressed properly by KMoS-RE© strategy.

The strategy was applied to several ISD real cases in different and diverse areas. The solutions achieved provide evidence about the usefulness, the value and the generalization of it. Therefore, the application of the KMoS-RE© strategy in several real cases shows that it is a useful approach in order to elicit the requirement of solutions or products especially in ISD.

Finally, the challenge of managing the tacit knowledge requires to analyze more cases in order to improve all the KM approaches including the KMoS-RE© strategy.
