A "Demo" is a demonstration or presentation designed to showcase a product, service, or concept. It allows potential users or customers to see how something works, highlighting its features and benefits. Demos are commonly used in various industries, including technology, where companies like Apple or Microsoft present new software or hardware. In addition to product demonstrations, the term "demo" can also refer to a sample version of a song or music track. Musicians often create demos to share their work with producers or record labels, providing a preview of their style and sound before a full release.