The professional, scientific, and technical services industry encompasses a wide range of businesses that offer specialized expertise to clients across various sectors. This industry includes firms involved in legal services, accounting, engineering, scientific research, consulting, advertising, and other professional services. These businesses are often characterized by their reliance on highly educated and skilled professionals who provide technical advice, scientific research, and other specialized services. The industry plays a crucial role in supporting other sectors by offering expert knowledge, innovation, and problem-solving capabilities.