Ancillary services refer to additional support services that enhance the primary offerings of a business or organization. In healthcare, for example, these services can include physical therapy, radiology, and laboratory testing, which help improve patient care and outcomes. They are not the main services but play a crucial role in providing comprehensive care. In other industries, ancillary services might involve customer support, logistics, or maintenance services. These services help ensure that the core operations run smoothly and efficiently, ultimately contributing to customer satisfaction and overall success.