Project ArchDeck, led by Prof. Jayesh Pillai at IDC IIT Bombay, is a collaborative mixed reality (MR) application designed to enhance collaboration in architectural design and related fields. The project leverages mixed reality to create a shared environment where multiple users can interact with 3D models, designs, and spatial layouts in real-time. Multiple users can view, modify, and discuss architectural designs simultaneously, regardless of their physical location. Architects, designers, and stakeholders can visualise structures in a spatial context, enabling better understanding of scale, proportions, and design details. The use of MR allows users to experience designs as if they were physically present, enhancing decision-making and creative discussions.