A 3D render or virtual 3D image is a computer generated image completely. This is a great tool to reduce costs and preview before there is any project or design to finally get a more refined result or, if necessary, to convince the potential client.
I use the 3D renders in various design disciplines, architecture, advertising… and even in my personal projects because 3D Rendering system allows the presentation and see the projects through photorealistic images with greater detail, simplifying the design process and dramatically increase the visual impact as a marketing tool.

Nude by the fireplace 3D render