A realistic rendering of a model can often give a product team or prospective client a clearer vision of a conceptual design than a plotted drawing.
For more information see Rendering in A360 Help.
Rendering creates a 2D image based on your 3D scene. It shades the scene's geometry using the lighting you've set up, the materials you've applied, and environmental settings such as background and fog.

While the final goal is to create a photorealistic, presentation-quality image that illustrates your vision, you create many renderings before you reach that goal. At a basic level, you can render your model without applying any materials, adding any lights, or setting up a scene. When you render a new model, the renderer automatically uses a virtual "over-the-shoulder" distant light. You cannot move or adjust this light.