Despite substantial research in Virtual Reality, the §emerging related technology of Mixed Reality (MR) §that creates an environment where virtual and real §objects are presented together on a single display, §has rarely been explored in the Architecture, §Engineering, and Construction (AEC) arena. §Observation of lab-based MR applications highlights §the need for a structured methodology addressing §suitability and usability issues for the application §potentials of MR technology to be fully realized. §This book has addressed the three major serial §development steps: specification, prototyping, and §evaluation. The scientific contribution of the §developed specification was the formulation of a §comprehensive multi-dimensional taxonomy for §specifying MR technology and characteristics. The §concept Mixed Reality-based collaborative virtual §environments (MRCVE) was presented and the §prototypes in two identified application scenarios §(face-to-face scenario and virtual space scenario) §have been successfully developed. Evaluation was §implemented on the basis of the MRCVE prototypes in §terms of benefits validation and usability §evaluation.