For example, in 3D Studio Max, you created a 3D model and defined light sources, different textures, and so on. In fact, all your modeling efforts, whether in the field of animation, architecture, games, filmmaking, etc., should be rendered as a final product and reach the customer, and it is the rendering engine that has the final say.
V-ray is a powerful rendering engine in the field of 3D modeling from the powerful company Chaos Group.