The feasibility study is essential on the way towards actual project implementation. It provides an essential conceptual basis and prepares a possible tender by defining the requirements of the overall system. Key individual requirements can be identified, particularly with the help of site inspections and discussions with the various stakeholders. This phase also includes an analysis of the cost-benefit balance, in which the financial aspects and the realization of a successful business case are defined. Thanks to its RTC experience, DAS can optimally support the analysis of cost drivers and the identification of synergies in the early stages of a project.