As early ideas are being pitched to executives, we use illustrations to augment the written descriptions, as to stimulate imagination of what is possible. . I am told, that without illustrations, we would typically be dead in the water.
for the purpose of pre-visualizing
Illustrator / Keynote
sometimes pitches need visualzation to get the viewers to easily understand complex ideas.
examples of concept illustrations
by understanding your customer, you can better build for your customer.
quick sketches help generate ideas for the greater group.