Abstract Prototypes are a critical aid in the product development process, allowing designers translate concepts to reality. However, the execution of prototypes depends heavily on the designer experience, evidenced in research in the need of creating design support tools to establish a standard for a prototyping effort. To improve on these findings, the Proto-Arch is introduced as a partial result of creating a standard for executing prototypes in each product development phase based on the prototyping roles and purposes. Proto-Arch defines the prototyping activities in the embodiment design phase.