Commercial Photography is a category that is best describes as follows: A photograph that is used to help sell, advertise or market a product, service, person or persons. All those photographs that you see in magazines, online publications, billboards, CD covers or posters all fall under commercial photography.
Commercial photographers help people promote their business. They help sell their products. They help market businesses. Commercial photographers take photographs that will help people reach whatever goal that it is that businesses and companies envision.