3D modelling is the process of creating a three-dimensional digital model of an object or space. It involves using specialised software to create a wireframe of the object and then adding surface details and textures to create a realistic representation. The 3D model can be used for visualisation, animation, and simulation purposes. In architecture and interior design, 3D modelling is used to create detailed representations of buildings, spaces, and furniture, which can help clients visualise the final product before construction begins.