As a selling technique, a sales presentation or sales pitch is a line of talk that attempts to persuade someone or something, with a planned sales presentation strategy of a product or service designed to initiate and close a sale of the product or service.
Billy Mays was well known for his sales pitches on American television.
In promotion and advertising, a testimonial or show consists of a person's written or spoken statement extolling the virtue of a product. The term "testimonial" most commonly applies to the sales-pitches attributed to ordinary citizens, whereas the word "endorsement" usually applies to pitches by celebrities. Testimonials can be part of communal marketing.
Actress and model Lin Chi-ling at the LG New Chocolate Phone launching event for the BL40, 2009, Hong Kong
Pope Leo XIII endorses "Vin Mariani", a patent medicine containing cocaine