The domain model above illustrates the key terms and their relationships that help to understand our AR system and its context. The users of the system can either be vendors or end customers. They can access the marketplace which is part of the system and contains different products (furniture and decoration). Each product is specified by a design that usually has one or more colors. Each product also has a 3D model which can virtually be placed in a room, which has 4 walls, with the help of the AR system by an end customer. To be able to do that the end customer needs to use either a smartphone or AR glasses they own to scan and display the room in AR.