Marketing decks are visual presentations used by marketers, public relations managers, and advertising executives for one of two purposes – either as a tool for selling a product or service to a client or as a snapshot of a given time period in the company's marketing and advertising program. It builds to the critical moment when a salesperson tries to finalize the sale. In concrete terms, the marketing deck is a presentation that is used in front of clients to pitch an idea or product. The marketing deck is powerful because it helps the potential customer feel more closely connected to the company or product.