IO-Link is a standardized communication protocol for industrial automation, developed by the IO-Link Consortium, which includes companies from Germany and other countries. It enables the provision of distance values and other sensor data via a point-to-point connection, enhancing smart factory capabilities. IO-Link serves industries like manufacturing, automotive, and logistics, offering products such as sensors, actuators, and master modules that support real-time data exchange and device parameterization. Key players in the IO-Link ecosystem include Siemens, Balluff, and IFM, providing solutions for seamless integration in Industry 4.0 applications.