Talk given as part of the European XFEL Users' Meeting 2015. Topics include: use of Karabo at the photon beamlines; user perspective; data perspective; Karabo as a “device” based system; device as controllable object; device as pipeline module; pipelines support load balancing; graphical interface; motors, pumps, valves; digitizers, ADCs, timing interfaces; control systems; DAQ and data management; data analysis.