In 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.

A sales pitch is essentially designed to be either an introduction of a product or service to an audience who knows nothing about it, or a descriptive expansion of a product or service that an audience has already expressed interest in. Sales professionals prepare and give a sales pitch, which can be either formal or informal, and might be delivered in any number of ways.

https://en.wikipedia.org/wiki/Sales_presentation