A sales pitch is a short presentation intended to persuade a potential buyer to purchase a product or service from you.
Also referred to as a sales presentation, it usually conveys your value proposition, tailored to the needs and requirements of each specific prospect, so it takes some research and preparation to deliver an effective sales pitch.
The pitch can be conveyed in person, on the phone, or even via email (e.g., cold outreach). This approach can also be used outside of sales, e.g., when recruiting affiliates.
An elevator pitch is a concise (typically under 30 seconds) and persuasive speech aiming to spark interest in what you have to offer. Unlike a sales pitch, it is mostly used to present your startup to potential investors.