The demographic change and the concentration on core business are issues that do not stop short of railway network operators. Many senior experts will retire in the near future and it will be no easy task to replace them. Therefore, partnerships for maintenance and even operation of railway networks get increasingly important. Service partnerships may meet the challenges that arise from the permanently increasing complexity which is carried along by the coexistence and interaction of new, mature and even partly outdated technologies. Railway operators look for support from reliable partners for tasks which are still important while they are not in their core business.