The platform, i.e. the structured data that it contains, can provide a good basis for the development of new services that can improve the functionalities of the  CDE defined at the first level. An example in this direction could be the interactive verification of “data quality” that works in the CDE of first level using the information included in the second one as tester, providing a useful instrument for supporting the design team. In the vision of a construction company, this aspect is, for example, applicable as a service for the validation of the information provided by the different actors of the project chain  (subcontractors, manufacturers, etc. - Figure \ref{221139}). Another aspect could be the inclusion of rules provided from standards and regulations that can be defined in the digital platform and linked to the first level environment. The result is another kind of design supports as proposed in several studies presented  e.g. during the Building Smart convention in Barcelona and in particular the one of our research group \citep{Pavan_Odorizzi_Bolognesi_Napoleone_Trebbi_Mirarchi_2017}.

MULTI-PROJECT ENVIRONMENT

Widening the perspective including multiple projects managed by different project and execution teams (stranger to each other), can be highlighted the real benefits related to the proposed structure (Figure \ref{564422}). The construction sector is characterized by processes of production and management by project, based on temporary coalitions of different organizations coming together to meet particular targets in a given timeframe \citep{Pellicer_Pellicer_Catalá_2009}. Thus it is difficult to capture, store, and explore the information produced during a project \citep{Gann_Salter_2000} due to the instability of the structure defined by the interrelations between the involved actors.