Presentation design often comes at the back of other marketing communication (advertising, scripts for brochures, white papers, and web sites). In many cases, marketing can benefit from the opposite approach. Visuals are much better to lay the foundation of a marketing story than text. And it is far easier to involve a CEO or other senior executive in a visual presentation design process, then force her to go through revisions of text. So a good presentation design project does not only give you a nice slide deck, it might well provide the inspiration for an entire marketing campaign.
