The urban scale modeling requires a highly interconnected workflow, flow of data and informations.

The amount of information to be processed must be managed with ICT methodologies and Big Data solutions: GIS for environmental and socio-economical dynamics and BIM tools for the single housing units and infrastructures.

The integration process requires a multi-scale vision and design method: from Satellite view scale to the BIM single electric switch in a room.

The solution is to build a continuum between representation and information: that’s what we call Urban Digital Twin.

The GIS – BIM Integrated Design has become paradigmatic therefore a necessary step in the management of urban and architectural complexity.