QSC AG engages in the cloud, Internet of Things (IoT), consulting, telecommunications, and colocation businesses primarily in Germany. It operates through Telecommunications, Outsourcing, Consulting, and Cloud segments. The Telecommunications segment offers a range of voice and data communication solutions, including asymmetric ADSL2+ lines, symmetric SDSL lines, and Internet access services via wireless local loop networks; IP telephony connections and related telephony systems; and open call-by-call and preselect voice telephony, as well as related value added services. The Outsourcing segment provides IT and data storage outsourcing services. The Consulting segment offers SAP services in the fields of basic operations, application management, implementations, user support, and maintenance, as well as in managing the necessary software licenses; and Microsoft consulting services, such as needs analysis, consulting, design, implementation, and operations and ongoing optimization measures. The Cloud segment provides cloud technologies, software solutions, and service components, as well as network and infrastructure services; and services, including transformation consulting, software and hardware competence, standard hardware, security solutions, and smart product manufacturing, as well as a proprietary IoT platform. The company serves medium-sized companies. QSC AG was founded in 1997 and is headquartered in Cologne, Germany.