The DDP façade cladding system is an exemplary result of such a process. Construction the exterior envelope of DDP was a challenge as the cladding system consists of over 45,000 panels in various sizes and degrees of curvature. This was made possible by the use of parametric modelling with an advanced metal-forming and fabrication process to develop a mass-customization system. Parametric modelling enabled the cladding system to be designed and engineered with much greater cost and quality control. Throughout the construction process, the cladding model was adjusted to incorporate various engineering, fabrication, and cost controls while maintaining the integrity of the original design.