The digitalization of public transport gives transport companies new opportunities to offer their customers integrated digital services along the service chain (search-book-pay-drive) and optimize their own transport operations as well. For many years, the Fraunhofer institutes that work together as Fraunhofer Mobility have been cooperating with transport companies and associations to develop new solutions for public transport in the future. These include electronic ticketing, navigation and guidance through the public transport system while traveling as well as informing passengers in case of disruptions or delays with the help of so-called Bluetooth beacons in vehicles or at bus stops and stations. Using transport network models to simulate traffic systems can help to optimize public transport and plan new, dynamic and individualized mobility services. The following topics provide an overview of the work and research topics of Fraunhofer Mobility.